Near-infrared spectroscopy (NIRS) can detect two different kinds of signals from the human brain: the hemodynamic (slow) optical response, and the neuronal (fast) optical response. This paper explores the nonlinear aspects of the tactile-stimulus-evoked neuronal optical response (fast optical response) over a NIRS time series (light intensity variation). The fast optical responses (FORs) over time series recorded in stimulus sessions are confirmed by event-related averaging. The chaos levels of NIRS time series recorded both in stimulus and in rest sessions are then identified according to the estimated largest Lyapunov exponent. The obtained results strongly suggest that the chaos level can be used to recognize the FORs in NIRS time series and, thereby, the state of the pertinent brain activity. © 2011 Chinese Assoc of Automati ...

A vision paper published by Photonics 21 aims to set out a new strategy for the future of European photonics and to highlight what could be achieved if this technology is maintained by the EU as a key funding priority in FP9. However, the organisation argues that Europe needs to speed the uptake of technology and its translation into new products and services.. Called Europes Age of Light, the paper was created through consultation with the photonics community, including more than 1700 companies and research organisations. In particular, the paper claims that more than 1million jobs could be created in Europe through photonics.. Photonics21s president Aldo Kamper said: The Photonics21 Vision Paper highlights what Europe could achieve if we have continued support from the EU through FP9: sustained economic growth, up to 1m new jobs, improved healthcare and a driverless vehicle revolution.. The paper also outlines the potential for Europe to increase its market share in the global photonics ...

Moores law has fostered the steady growth of the field of digital image processing, though computational complexity remains a significant problem for most of the digital image processing applications. At the same time, also research in the field of optical image processing has matured, potentially bypassing the limitations of digital approaches and giving rise to new applications. Additionally, from image acquisition perspective the rapid convergence of digital multimedia devices is driving a strong industrial growth of photonics technologies. Already, photonics based enablers can be found in a myriad of multimedia applications such as displays and image sensing, illumination systems, and high-performance light engines - all of which have major volume positions in the photonics market. Along with the growing interest for emerging multimedia applications the demand for new photonics enablers is steadily increasing, and new technologies are continuously created to meet the needs ...

A study by Triton Market Research with the title Global Silicon Photonics Market, covers the Global Analysis and Forecast for 2019-2028 by Components (Interconnects, Optical Modulators, LED, Waveguides, Wavelength Division Multiplexer Filters, Photodetector), by Product Type (Optical Transceiver, Sensors, Photovoltaic Cells/Solar Cells, Integrated Circuits, Optical Switches), by Application (Telecommunication, Information Processing, Other Application), and by Geographical Region (North America, Middle East and Africa, Latin America, Europe, Asia-Pacific).. Silicon photonics is a novel technology used to manufacture optical devices from silicon. It makes use of photons to transfer huge amounts of data at high speed, using extremely low power.. Request Free Sample of the Global Silicon Photonics Market Report @ https://www.tritonmarketresearch.com/reports/silicon-photonics-market#request-free-sample. As per the report, the global silicon photonics market will account for revenue worth $3294.55 ...

Redfern Integrated Optics. Short Description about Photonics Market: Photonics is one of the fastest growing high-tech industries in the world today. It includes optical communications (e.g., fiber optics, lasers, and infrared links), optical imaging (e.g., spy and weather satellites, night vision, holography, flat screen display, and CCD video cameras), optical data storage and optical computing (e.g., CD s and DVD s), optical detectors (e.g., supermarket scanners, medical optics, and nondestructive evaluation of materials), lasers (e.g., welding lasers, laser surgery, laser shows, and laser rangefinders), spectroscopy (e.g., chemical and biological detection, anti-terror detection) and quantum optics (e.g., quantum teleportation, quantum cryptography, and single-photon optics).. Scope of the Photonics Market Report :. In 2019, The Worldwide Photonics market size was USD 622930 million and it is expected to reach USD 966300 million by the end of 2026, with a CAGR of 6.4% during ...

Del Mar Photonics, Inc. is an established manufacturer and system integrator of advanced photonics products for scientific and industrial applications. Product portfolio includes ultrafast laser oscillators and amplifiers based on Ti:Sapphire, Cr:Forsterite, Er- and Yb- doped fibers; variety of measurement tools such as autocorrelators, SPIDER and cross-correlator and a femtosecond dynamic research tools such as Beacon fluorescence up-conversion and Hatteras transient spectroscopy pump-probe systems. Del Mar Photonics offers integration of femtosecond laser systems for multiphoton imaging, scanning probe microscopy, micromachining, molecular dynamic, X-ray and plasma research, THz generation and spectroscopy and other applications.. Del Mar Photonics, Inc. is a private company headquartered in ...

TY - JOUR. T1 - Bismuth manganite. T2 - A multiferroic with a large nonlinear optical response. AU - Sharan, Alok. AU - Lettieri, James. AU - Jia, Yunfa. AU - Tian, Wei. AU - Pan, Xiaoqing. AU - Schlom, Darrell G.. AU - Gopalan, Venkatraman. PY - 2004/6/1. Y1 - 2004/6/1. N2 - We report evidence for ferroelectricity in bismuth manganite epitaxial films from optical second-harmonic generation (SHG). The change in the polar symmetry of SHG signals under external electric fields is correlated to specific changes in the ferroelectric domain microstructures. We also observe giant enhancement of SHG by 3 to 4 orders of magnitude with effective d f∼193 pm/V under electric fields of ∼707 V/mm. The material also exhibits a large third-order nonlinear optical response with nonlinear absorption coefficient α1∼ -0.08 cm/kW and nonlinear refractive index n1∼-0.53×10-9 cm2/W.. AB - We report evidence for ferroelectricity in bismuth manganite epitaxial films from optical second-harmonic generation ...

At the Women in Optics panel discussion, which took place on 9 February at Photonics West, it was noted that the number of female optics and photonics professionals holding SPIE membership as of 2014 stood at 3,000, representing 16 per cent of the total membership - this has grown from four per cent in 1998 when the SPIE Women in Optics group was launched. Although the figures show a rise in the number of females, with just one in six women holding membership, it suggests that they are still greatly outnumbered in the optics and photonics field.

MIT is a key player in a new $600 million public-private partnership announced today by the Obama administration to help strengthen high-tech U.S.-based manufacturing.. Physically headquartered in New York state and led by the State University of New York Polytechnic Institute (SUNY Poly), the American Institute for Manufacturing Integrated Photonics (AIM Photonics) will bring government, industry, and academia together to advance domestic capabilities in integrated photonic technology and better position the U.S. relative to global competition.. Federal funding of $110 million will be combined with some $500 million from AIM Photonics consortium of state and local governments, manufacturing firms, universities, community colleges, and nonprofit organizations across the country.. Technologies that can help to integrate photonics, or light-based communications and computation, with existing electronic systems are seen as a crucial growth area as the world moves toward ever-greater reliance on ...

The global Polarization Controller Market report comprises a valuable bunch of information that enlightens the most imperative sectors of the Polarization Controller market. The data available in the report delivers comprehensive information about the Polarization Controller market, which is understandable not only for an expert but also for a layman. The global Polarization Controller market report provides information regarding all the aspects associated with the market, which includes reviews of the final product, and the key factors influencing or hampering the market growth. Moreover, the global Polarization Controller market report, particularly emphasizes on the key market players Newport Corporation, General Photonics Corporation, EOSPACE, Phoenix Photonics, RP Photonics that are competing with each other to acquire the majority of share in the market, financial circumstances, actual certainties, and geographical analysis.. Click Here To Access The Sample Report:: ...

Laser & Photonics Reviews is an international journal which covers the current range of laser science and photonics, both theoretical and experimental, from recent research to specific developments and novel applications. Each issue contains invited review articles, topical reports, invited articles based on conference plenary talks and concise conference reports. Its the only review journal in the field of optics and photonics.

In this paper, a new sensor technology solution is proposed based on the co-design of tunable quantum-spin crossover material with smart photonics and RF Front-EndModule (FEM) integrating innovative Thermal-Body harvesting. The quantum-spin crossover material, co-integrated with the Photonics and RF Front-End-Module, hosts smart Low-Power Signal-Processor (LPSP) embedding ArtificialIntelligence (AI) and Machine-Learning (ML) algorithms for accurate sensing of vital-signs information. The smart signalprocessing capabilities are brought near the sensor to allow for real-time Correlation-based data analytics and decision-making process with secure wireless data transfer. The performances of the proposed technology solution are demonstrated by building a smart wearable Bracelet device for real-time sensing of Correlated body temperature and oxygen saturation levels. Porting of the Photonics and RF FEM into 22nm Fully Depleted Silicon On Insulator (FD-SOI) platform using Application Specific ...

An electro-optic display comprises a bistable electro-optic material having a viewing surface and an opposed writing surface; a deformable member disposed adjacent but spaced from the writing surface of the electro-optic material, and bearing elongate electrodes facing the writing surface of the electro-optic material; and a movable member disposed on the opposed side of the deformable member from the electro-optic material and movable parallel to the elongate electrodes, the movable member contacting and deforming the deformable member such that a portion of each elongate electrode contacts or lies closely adjacent the writing surface of the electro-optic material.

The Green Photonics Guide is the database dedicated to Optics and Photonics, helping them find the products & services they need.CSM Instruments,JGR Optics, Inc.,OPTOKON Co., Ltd.,SQS Vlaknova Optika (Fiber Optics),MICRO ELECTRONICS, INC.,Advanced Test Equipment Rentals,American Polywater Corporation,B&W Tek, Inc.,Borescopes R Us,Custom Calibration Solutions, LLC,

The two special volumes of Advances in Polymer Science entitled Polymers for Photonics Applications provide authoritative and critical reviews of up-to-date research and advances in various fields of photonic polymers as well as their promising applications. Eight articles contributed by internationally recognized scientists are concerned with polymers for second- and third-order nonlinear optics, quadratic parametric interactions in polymer waveguides, electroluminescent polymers for light sources, photoreflective polymers for holographic information storage, and highly efficient two-photon absorbing organics and polymers, including their applications. This review should provide individuals working in the field of photonic polymers with invaluable scientific knowledge on the state of the art while giving directions for future research to those deeply interested.Lee, K. S. is the author of Polymers for Photonics Applications I Nonlinear Optical and Electro Iuminescence Polymers with ISBN ...

Accounts of Chemical Research (2) ACS Applied Matererials and Interfaces (2) ACS Applied Materials and Interfaces (3) ACS Central Science (1) ACS Chemical Biology (1) ACS NAno (38) ACS Photonics (35) Acta Biologica Szegediensis (1) Acta Biomaterialia (4) Acta Crystallographica (1) Acta Mechanica Sinica (1) Acta Neuropathologica (1) Acta Physica Sinica (4) Actuators (1) Advanced Biomaterials and Devices in Medicine (1) Advanced Biosystems (2) Advanced Drug Delivery Reviews (2) Advanced Functional Materials (3) Advanced Healthcare Materials (2) Advanced Materials (15) Advanced Optical Materials (7) Advanced Optical Technologies (1) Advanced Powder Technology (1) Advanced Science (3) Advances in Biological Regulation (1) Advances in Colloid and Interface Science (5) Advances in Optical Technologies (1) Advances in Optics and Photonics (2) Aerosol Science and Technology (2) AIP Advances (8) AIP Conference Proceedings (1) American Journal of Physics (3) American Journal of Physiology - Renal ...

Research in photonic computing has flourished due to the proliferation of optoelectronic components on photonic integration platforms. Photonic integrated circuits have enabled ultrafast artificial neural networks, providing a framework for a new class of information processing machines. Algorithms running on such hardware have the potential to address the growing demand for machine learning and artificial intelligence in areas such as medical diagnosis, telecommunications, and high-performance and scientific computing. In parallel, the development of neuromorphic electronics has highlighted challenges in that domain, particularly related to processor latency. Neuromorphic photonics offers sub-nanosecond latencies, providing a complementary opportunity to extend the domain of artificial intelligence. Here, we review recent advances in integrated photonic neuromorphic systems, discuss current and future challenges, and outline the advances in science and technology needed to meet those challenges.

The Eagle V from Raptor Photonics is a 4-megapixel camera intended for high-resolution fluorescence imaging, as well as adaptive optics and astronomy

The open-access encyclopedia for topics in laser physics, laser technology, nonlinear optics, fiber optics, quantum optics, and general optics. Very useful particularly for the photonics industry and for researchers!

Welcome to the digital edition of Optics amp; Photonics News (OPN), the monthly news magazine of the Optical Society of America. OPN provides in-depth coverage of recent developments in the field of optical physics and gives busy professionals the tools they need to succeed in the optics industry. Content includes informative pieces on photonics research, optical engineering, science and society, education, technology and business. OPN aims to make optics engaging and accessible to a broad readership of physicists, engineers, entrepreneurs and students. Our articles are written by top scientists and science journalists. For more information, visit www.osa-opn.org.

Welcome to the digital edition of Optics amp; Photonics News (OPN), the monthly news magazine of the Optical Society of America. OPN provides in-depth coverage of recent developments in the field of optical physics and gives busy professionals the tools they need to succeed in the optics industry. Content includes informative pieces on photonics research, optical engineering, science and society, education, technology and business. OPN aims to make optics engaging and accessible to a broad readership of physicists, engineers, entrepreneurs and students. Our articles are written by top scientists and science journalists. For more information, visit www.osa-opn.org.

The Laboratory of Optics at Murcia University develops new optical technologies to be applied in the human eye. It is a world leader research group and pioneered different technologies based in advanced photonics in Ophthalmology. LOUM research is funded by the European Research Council (ERC) and other national and international sources. We are looking for recent PhDs with experience in experimental optics and photonics and motivated to transfer the ideas to real applications.

Research in Applications of Optics and Photonics is continuosly evolving with remarkable and exciting recent developments, all over the world. The AOP 2017 will be an excellent opportunity to increase in an open friendly enviroment the external visibility of participantss research works and to establish sound mutually beneficial cooperation relationships among institutions, the industry, higher education institutions and scientific societies commited to the promotion of Optics and Photonics and of its impact in the development of the society.

ETOP (Education and Training in Optics & Photonics) is a conference to bring together leading optics and photonics educators from all levels and orientations

This meeting focused on the processing of information by photonic means including fundamentals, technologies and applications. Topics included sensing/actuation, imaging, storage, interconnects, communications and switching. The topical meeting changed its name from Optics in Computing to Information Photonics in 2005 and subsequently merged into the Integrated Photonics Research meeting. Also known as: ...

November 8, 2011. - TILL Photonics introduces VoiceCoil, the fastest microscope z-drive in the industry. It combines the range of a stepper motor driven coarse drive (22mm) with the precision of a piezo at an exceptional speed. Accuracy of 20nm pp is available at full range, thus enabling 3-D scans of unprecedented quality. Settling time for a 2μm step is 10ms allowing z-stacks which are only limited by the speed of the camera.. A voice coil drive works similar to a dynamic loudspeaker where the coil is moving the membrane of the speaker. Simply speaking: In TILLs VoiceCoil the membrane is replaced by the microscope objective. Here, however, a very precise optical position measurement system with a closed loop feedback ensures nm precise position control of the objective.. Principle of VoiceCoil z-drive. The VoiceCoil z-drive will be used in TILLs digital microscope iMIC. For more details please visit TILL Photonics at booth 3017 during this years Neuroscience Meeting at the Convention ...

Laser and optics experts from around the globe will gather to discuss the latest technologies when the third Optics & Photonics International Cong

Nishant is VP of the OCT division at Wasatch Photonics Durham, NC site. He leads the efforts toward development and commercialization of novel optical coherence tomography products. In the 5 years prior to joining Wasatch Photonics, Dr. Mohan was a research fellow and senior R&D engineer for optical and medical entities. He holds a PhD in Biomedical Engineering from Boston University and undergraduate in Electronics and Communication Engineering from Indian Institute of Technology, Guwahati, India. Dr. Mohan is a member of SPIE, the International Society for Optics and Photonics, and serves on its standing committee for public policy.. ...

This thesis presents the development of integrated silicon photonic devices. These devices are compatible with the present and near future CMOS technology. High-khorizontal grating couplers and waveguides are proposed. This work consists of simulations and device design, as well as the layout for the fabrication process, device fabrication, process development, characterization instrument development and electro-optical characterizations.. The work demonstrates an alternative solution to costly silicon-on-insulator photonics. The proposed solution uses bulk silicon wafers and thin film deposited waveguides. Back-end deposited horizontal slot grating couplers and waveguides are realized by multi-layers of amorphous silicon and high-k materials.. The achievements of this work include: A theoretical study of fully etched slot grating couplers with Al2O3, HfO2 and AIN, an optical study of the high-k films with spectroscopic ellipsometry, an experimental demonstration of fully etched SiO2 single slot ...

The successful exfoliation of graphite initiated new science in any research field and is employing a huge number of scientists in the world investigating chemical, structural, mechanical and optoelectrical; properties of the atomic-thick sheets of graphene and graphene oxide. Similarly to other carbon-based materials, graphene family have shown exceptional optical responses; and nowadays it is engineered to produce efficient photonic components. In this review we aim to summarize the main results in nonlinear optical response and fluorescence of graphene oxide; moreover, its laser printing is reviewed as a novel promising lithographic technique. Neda Ghofraniha and Claudio Conti in Journal of Optics ...

MOUNTAIN VIEW, Calif., Oct. 27, 2011 - Mobius Photonics, an innovative producer of short pulsed fiber laser sources (IR, green, and UV laser), announces that its G1R2 laser source has been used in super-resolution microscopy experiments at the Max Planck Institute for Biophysical Chemistry (Göttingen, Germany). The experiments demonstrated that a laser-based fluorescence microscopy technique called stimulated emission depletion (STED) microscopy could be used to image intact, living, multicellular organisms.. Over the past few years, much research has focused on developing STED set-ups based on novel laser sources that could enhance the techniques capabilities-particularly the ability to generate ultra-high-resolution images of biological samples quickly and to use fluorescent protein variants of choice. The recent experiments at the Max Planck Institute successfully demonstrated multiple laser sources for imaging multicellular, living samples expressing green fluorescent protein ...

Gérard Mourou, Ted Hänsch, and Stefan Hell call for explicit addition of photonics as key technology in forthcoming Horizon Europe program.

Buy the Paperback Book Photonics of Biopolymers by Nikolai L. Vekshin at Indigo.ca, Canadas largest bookstore. + Get Free Shipping on books over $25!

MENLO PARK, Calif., Jan. 26, 2017 /PRNewswire/ -- SPIE Photonics West Presentations to Show BioPharmX was First to Visualize Minocycline on the Skin Using...

TY - JOUR. T1 - Low driving voltage Mach-Zehnder interference modulator constructed from an electro-optic polymer on ultra-thin silicon with a broadband operation. AU - Sato, Hiromu. AU - Miura, Hiroki. AU - Qiu, Feng. AU - Spring, Andrew M.. AU - Kashino, Tsubasa. AU - Kikuchi, Takamasa. AU - Ozawa, Masaaki. AU - Nawata, Hideyuki. AU - Odoi, Keisuke. AU - Yokoyama, Shiyoshi. N1 - Funding Information: The Cooperative Research Program of Network Joint Research Center for Materials and Devices and Nano-Macro Materials, Devices, and System Research Alliance of the Ministry of Education, Culture, Sports, and Science and Technology, JSPS KAKENHI Grant (JP26289108 and JP266220712), and the Strategic Promotion of Innovative Research and Development (S-innovation, 200903006) of JST. Publisher Copyright: © 2017 Optical Society of America.. PY - 2017/1/23. Y1 - 2017/1/23. N2 - An electro-optic (EO) polymer waveguide using an ultra-thin silicon hybrid has been designed and fabricated. The silicon core ...

The IET organises a range of international conferences, seminars and exhibitions each year. The conferences cover all aspects of electrical, electronic, manufacturing and systems engineering, and related sciences. Proceedings of all conferences are published after each event. Conferences from 1994 up to the present are available on the IET Digital Library as part of the IET Digital Library Complete Publications Package. Seminar publications and digests are collections of condensed information relating to presentations at IET colloquia and seminar events. They are sometimes in the form of speakers hand-outs or copies of the slide show presentation ...

We study the optical properties of gold nanoparticles (NPs) coated with a nematic liquid crystal (NLC) whose director field is distributed around the NP according to the anchoring conditions at the surface of the NP. The distribution of the NLC is obtained by minimization of the corresponding Frank free-energy functional whilst the optical response is calculated by the discrete-dipole approximation (DDA). We find, in particular, that the anisotropy of the NLC coating does not affect much the (isotropic) optical response of the NP. However, for strong anchoring of the NLC molecules on the surface of NP, the inhomogeneity of the coating which is manifested by a ring-type singularity (disclination or Saturn ring), produces an enhancement of the extinction cross spectrum over the entire visible spectrum.. ...

Huella Profundice en los temas de investigación de Optical response of carbon nanotubes functionalized with (free-base, Zn) porphyrins, and phthalocyanines: A DFT study. En conjunto forman una huella única. ...

Accounts of Chemical Research (2) ACS Applied Matererials and Interfaces (2) ACS Applied Materials and Interfaces (3) ACS Central Science (1) ACS Chemical Biology (1) ACS NAno (38) ACS Photonics (32) Acta Biologica Szegediensis (1) Acta Biomaterialia (4) Acta Crystallographica (1) Acta Mechanica Sinica (1) Acta Physica Sinica (4) Actuators (1) Advanced Biomaterials and Devices in Medicine (1) Advanced Biosystems (1) Advanced Drug Delivery Reviews (2) Advanced Functional Materials (3) Advanced Healthcare Materials (1) Advanced Materials (14) Advanced Optical Materials (7) Advanced Optical Technologies (1) Advanced Powder Technology (1) Advanced Science (3) Advances in Biological Regulation (1) Advances in Colloid and Interface Science (5) Advances in Optical Technologies (1) Advances in Optics and Photonics (2) Aerosol Science and Technology (2) AIP Advances (8) AIP Conference Proceedings (1) American Journal of Physics (3) American Journal of Physiology - Renal Physiology (1) American Journal of ...

In a proof-of-concept experiment carried out at the Institut de Physique de Nice, France, Kevin Pichler, another member of the TU Wien research team, tested the calculation method by irradiating randomly arranged Teflon objects with microwaves. Based on the experimentally measured signals, he was able to generate exactly those waveforms that produced the optimal wave states in the presence of the disorder in the system.. In our proof-of-concept study we worked with microwaves because they provide us easy access to both the radiation in the far field, to measure the scattering matrix, and to the near field around the target, to see how the target is affect by the field, Horodynski explains.. Rotter reports that the research team is now collaborating with an experimental group on applying the technique in the visible-light regime, to optimize the stiffness of an optical trap. But he also believes that the insight the technique provides raises many more interesting possibilities in which way ...

linephoto , E+ , Getty ImagesA team in Denmark has developed a sensor-based system which could help to tackle air pollution by detecting ammonia and other gases emanating from the agriculture sector.Alongside chemical engineers and chemists, researchers from Aarhus University and the Technical University of Denmark worked on the technology as part of the Ecometa project, which is focused on cutting emissions connected to agriculture. The researchers at the universities are focused on photonics, a term the European Commission has described as the science and technology of light. Details of their system have been published in the journal MDPI Photonics.According to an announcement earlier this week, those involved in the project have produced an integrated optical sensor which measures ammonia in the air using a laser, a gas sensor and hollow-core optical fibres.Andreas Hansel is a postdoctoral researcher at Aarhus Universitys Department of Engineering. In a statement issued Tuesday, he ...

Abstract: Following the Nobel prize in 2016, topological ideas are progressively enriching various research directions in condensed matter physics, from graphene to photonics. The recent years witnessed an exploding number of top-level publications with practical applications and fundamental physics. Topological photonics is attracting growing interest from classical and quantum perspectives. Authors reported many ground-breaking results, as topologically protected modes in photonic crystals and quantum simulations of the 4D Hall effect. Here we introduce the leading ideas in the most accessible way, and review topics like the topological classification of photonic band structures, synthetic magnetic fields, and artificial dimensions. We discuss some recent results on topological lasers and possible developments like frequency-comb emitters, PT-symmetric devices, and the application of machine learning to design topological photonic devices.. ...

The aim of this Cost Action MP1205 is to establish active interlinks between laboratories working in the fields of micro and optofluidics, optical tweezers, nanoscience and photonics, bio and soft materials, focusing their work towards lab-on-a-chip systems and at promoting long-term development of these fields in Europe. The goal is to increase the knowledge in basic physics and biology from the micro- down to the nano-scale, and to develop the future generation of lab-on-a-chip devices for portable and inexpensive, but accurate and reliable equipments for: (i) diagnostics; (ii) detection, identification and manipulation of biomolecules and nanomaterials, (iii) biomedical and environmental microsensing, (iv) advanced imaging, (v) energy generation.. The scientific innovation concerns advanced concepts of optofluidics and new generation of optofluidic devices integrating photonics as well as optical control. Indeed, their technologically relevant research threads are of significant interest for ...

DK Photonics Technology Limited, a China based manufacturer and exporter of high-end optical passive parts, recently launched superior-quality fiber optic communication tools. The owners of the manufacturing firm expressed that the components are instrumental in fiber senser applications as well as fiber laser applications. The Shenzen, China best company now aims to expand the export market for its CWDM Mux/DeMux products and other sophisticated products that are high in demand in fiber optic communications sector.. The company owners revealed that high-power isolators as well as different phase modulation products are actually their flagship products. They claimed that the mini CWDM and DWDM products that they are offering now facilitate expansion of bandwidth capacity. They also claimed that the compact CWDM products are some of the smallest packages now available in the fiber optic communication industry. We have used new technology in manufacturing the CDWM modules as well as the other ...

Tuan Vo-Dinh (Vietnamese: Võ Đình Tuấn) (Nha Trang, 11 April 1948) is R. Eugene and Susie E. Goodson Professor of Biomedical Engineering, Professor of Chemistry, and Director of the Fitzpatrick Institute for Photonics of Duke University. Vo-Dinh has been ranked No. 43 on a list of the worlds top 100 living geniuses in a survey conducted by Creators Synectics, a global consultants firm. Born in Nha Trang, Vietnam, Vo-Dinh earned his doctorate degree in biophysical chemistry at the Swiss Federal Institute of Technology in Zurich in 1975 and emigrated to the U.S. in 1975. He researched at the Oak Ridge National Laboratory in Tennessee as Director of Center for Advanced Biomedical Photonics and was Professor at University of California, University of Tennessee, (Knoxville), before coming to Duke in March 2006. He specializes in photonics, the science of the interaction between light and matter like biophotonics, laser-excited luminescence spectroscopy, etc. T. Vo-Dinh, Dosimeter for ...

This product is a surface-emitting semiconductor laser with a photonic crystal structure that features a narrow spot beam pattern (narrow beam spread angle, circular shape) and a narrow spectral linewidth. The photonic crystal is an optical nanostructure having a periodic refractive index distribution with dimensions nearly equal to the light wavelengths. In this product, light is amplified and diffracted by the photonic crystal mounted in the vicinity of a light amplification layer called an active layer, and the amplified light is output as a laser beam in a direction perpendicular to the surface. Even with a large area, this laser allows a stable resonance action and so delivers a high quality beam with a narrow radiant angle.

We study the optical properties of gold nanoparticles (NPs) coated with a nematic liquid crystal (NLC) whose director field is distributed around the NP according to the anchoring conditions at the surface of the NP. The distribution of the NLC is obtained by minimization of the corresponding Frank free-energy functional whilst the optical response is calculated by the discrete-dipole approximation (DDA). We find, in particular, that the anisotropy of the NLC coating does not affect much the (isotropic) optical response of the NP. However, for strong anchoring of the NLC molecules on the surface of NP, the inhomogeneity of the coating which is manifested by a ring-type singularity (disclination or Saturn ring), produces an enhancement of the extinction cross spectrum over the entire visible spectrum.. ...

Yu-Yi Tzeng,1 Zong-Yan Zhuo,1 Ming-Yin Lee,1 Chien-Sheng Liao,1 Pei-Chun Wu,3 Chin-Jie Huang,3 Ming-Che Chan,2 Tzu-Ming Liu,3 Yen-Yin Lin,4,5,6 and Shi-Wei Chu1,6,* 1Department of Physics, National Taiwan University, No. 1, Sec. 4, Roosevelt Rd, Taipei 10617, Taiwan 2Institute of Imaging and Biomedical Photonics, National Chiao-Tung University, Tainan, Taiwan 3Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan 4Institute of Photonics Technologies, Department of Electrical Engineering, National Tsing-Hua University, Hsinchu, Taiwan 5Brain Research Center, National Tsing-Hua University, Hsinchu, Taiwan 6These authors contribute equally to this work *Corresponding author: [email protected] ...

Mesh-based Monte Carlo techniques for optical imaging allow for accurate modeling of light propagation in complex biological tissues. Recently, they have been developed within an efficient computational framework to be used as a forward model in optical tomography. However, commonly employed adaptive mesh discretization techniques have not yet been implemented for Monte Carlo based tomography. Herein, we propose a methodology to optimize the mesh discretization and analytically rescale the associated Jacobian based on the characteristics of the forward model. We demonstrate that this method maintains the accuracy of the forward model even in the case of temporal data sets while allowing for significant coarsening or refinement of the mesh.

A freestanding membrane composed of a nanofiber network of a graphenepolymer nanocomposite is fabricated by electrospinning and applied as an optical element in fiber lasers. The functionalization of graphene with conjugated organic molecules provides a handle for improving mechanical and thermal properties as well as tuning the optical properties, A small loading (0.07 wt%) of functionalized graphene enhances the total optical absorption of poly(vinyl acetate) (PVAc) by 10 times. The electrospun graphene-polymer nanocomposites exhibit wideband saturable absorbance for laser pulse shaping, and attain a larger modulation depth and smaller nonsaturable loss than single-walled carbon nanotubes. The results show that electrospun graphene nanocomposites are promising candidates as practical and efficient photonic materials for the generation of ultrashort pulses in fiber lasers. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA ...

Diatoms are among the dominant phytoplankters in the worlds oceans, and their external silica investments, resembling artificial photonic crystals, are expected to play an active role in light manipulation. Digital holography allowed studying the interaction with light of Coscinodiscus wailesii cell wall reconstructing the light confinement inside the cell cytoplasm, condition that is hardly accessible via standard microscopy. The full characterization of the propagated beam, in terms of quantitative phase and intensity, removed a long‐standing ambiguity about the origin of the light confinement. The data were discussed in the light of living cell behavior in response to their environment. (© 2014 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim ...

Developing emerging integrated photonic devices and circuits and novel heterogeneous platforms for various linear- and nonlinear-optic applications, and operating at wavelengths ranging from the visible to the mid-infrared ...

Many of the biological functions of a cell are dictated by the intricate motion of proteins within its membrane over a spatial range of nanometres to tens of micrometres and time intervals of microseconds to minutes. This rich parameter space is not accessible by fluorescence microscopy, but it is within reach of interferometric scattering (iSCAT) particle tracking. However, as iSCAT is sensitive even to single unlabelled proteins, it is often accompanied by a large speckle-like background, which poses a substantial challenge for its application to cellular imaging. Here, we employ a new image processing approach to overcome this difficulty and demonstrate tracking of transmembrane epidermal growth factor receptors with nanometre precision in all three dimensions at up to microsecond speeds and for durations of tens of minutes. We provide examples of nanoscale motion and confinement in ubiquitous processes such as diffusion in the plasma membrane, transport on filopodia and rotational motion during

Aerospace and Defense Technology is the evolution of two great publications - Defense Tech Briefs and Aerospace Engineering - coming together as one to cover the latest advances in military AND commercial aerospace from the DoD, NASA, and major industry leaders. By combining cutting edge design briefs from the Air Force, Army, Navy, and DARPA, and rich, in depth feature content focusing on the most innovative aspects of aerospace engineering for commercial applications, Aerospace and Defense Technology provides a comprehensive resource to the mil aero industry and the design engineering community.

Driven by both electrostatic and hydrophobic interactions, protein adsorption to solid surface is a major interest in pharmaceutical science. In this application, the QCM instrument qCell T is used to study the extent and driving forces of the PH-dependent protein adsorption to heat-treated silicone surfaces. This study further discusses potential driving forces that trigger protein adsorption. Learn more by viewing the PDF here: AppNote-Effect_of_pH_on_Protein_Adsorption_to_Silicone_Surface.. ...

Wireless transmission at microwave frequencies is important for high-data-rate transmission applications, such as mobile phone networks, satellite links and remote imaging. Now, Xianshu Luo and colleagues from the A*STAR ...

Tim is the CEO and founder of Serra Ventures, LLC, a micro venture capital firm that provides coaching, management guidance and funding to seed and emerging stage companies in selected high technology sectors throughout the Midwest and selected other geographies. Serra has provided consulting to over 200 tech start-ups and has provided funding to over 60 of them. They presently manage $65 million in early stage company investments. Tim was a Co-Founder and Chief Executive Officer of iCyt, a bioscience instrument firm which was acquired by Sony Corporation in 2009. Tim has a B.S. in Accounting, B.S. in Business Admin., Illinois State University, summa cum laude, 1983, and he holds the Certified Public Accountant (CPA, 1983) and Certified Management Accountant (CMA, 1984) designations. Tim ist Gründer und CEO von Serra Ventures LLC-ein Mikro Venture Capital-Unternehmen, das Coaching- und Management-Beratung sowie Finanzierungen für aufstrebende Unternehmen in ausgewählten High-Tech-Branchen im ...

Platinum-based chemotherapy drugs have had an enormous impact on cancer treatment, but cancers often become resistant to these treatments through mechanisms which are still poorly understood. To clarify these issues, there is a need for sensors that can detect active cisplatin drug exposure. As optical sensors, single-walled carbon nanotubes (SWCNTs) have properties that make them ideally suited for detection of biologically important analytes. Carbon nanotubes exhibit bandgap fluorescence which does not photobleach or blink, and their fluorescent properties can be modulated by changes in their immediate environment. Tissue transparent emission, biocompatibility, and versatile modes of optical response make SWCNTs uniquely valuable optical biosensors. Recent work by our group has yielded insight into the mechanism of optical changes induced by analyte interaction with single-stranded DNA-wrapped SWCNTs. Using these findings, we designed SWCNT-based sensors for controllable red or blue-shifting ...

The exact optical response of quantum few-level systems depends crucially on the exact choice of the incoming pulse areas. We use four-wave mixing (FWM) spectroscopy to infer the coherent response and dynamics of single InAs quantum dots (QDs) and study their pulse area dependence. By combining atomic force microscopy with FWM hyperspectral imaging, we show that the retrieved FWM signals originate from individual QDs enclosed in natural photonic defects. The optimized light-matter coupling in these defects allows us to perform our studies in a wide range of driving field amplitudes. When varying the pulse areas of the exciting laser pulses Rabi rotations of microscopic interband coherences can be resolved by the two-pulse FWM technique. We investigate these Rabi coherence rotations within two- and three-level systems, both theoretically and experimentally, and explain their damping by the coupling to acoustic phonons. To highlight the importance of the pulse area in uence, we show that the ...

Coating metal nanocrystals with responsive polymers provides a model case of smart, functional materials, where the optical properties can be modulated by external stimuli. However the optical response is highly sensitive to the polymer shell morphology, thickness and dielectric contrast. In this paper we study the nature of cross-linked, thermoresponsive polymer shells for the first time using four different scattering approaches to elucidate the density profile of the shells. Each scattering method provides unique information about the temperature-induced changes of shell thickness in terms of hydrodynamic radius and radius of gyration, the pair-distance distribution functions of the shells as well as the dynamic network fluctuations. Only a combination of these different scattering techniques allows to develop a morphological model of the core-shell particles. We further demonstrate control of the cross-linker distribution in core-shell synthesis by semi-batch precipitation copolymerization. ...

Textile industries produce large quantities of waste water which is notoriously known to contain strong colour, suspended solids and COD. Although several treatment processes, such as filtration, coagulation, oxidation, ozonation, reverse osmosis, etc., have been practiced for many decades, they all have inherent limitations. They transfer the harmful pollutants from one phase to another and do not address detoxification. Semiconductor photocatalysis is a promising technique for photodegradation of hazardous chemicals found in waste waters. Among various semiconductors, TiO2 has been studied widely. However, the main drawbacks associated with TiO2 are (i) large band gap (Eg > 3.2 eV) (only UV active) and (ii) recombination of excitons. Dye sensitisation, coupling of semiconductors, and transitional metal doping are some of the methods reported to shift its optical response to visible region. Herein, nanoparticles of different noble metals such as Ag, Au and Pt were deposited on synthesised TiO2,

A variable attenuation signal acquisition probing system and voltage measurement system uses an optical cavity to acquire a signal under test. The probing system has an optical transmitter and receiver that are coupled to the optical cavity via an optical transmission system. The optical cavity has an electrode structure having apertures formed in the optical cavity that are parallel to propagation path of the optical signal within the cavity. A modulated optical signal is generated by the optical cavity in response to the signal under test creating an electromagnetic field distribution in electro-optic material in the optical cavity that overlaps the optical path of the optical signal propagating in the optical cavity which varies the index of refraction of electro-optic material in the optical path. Changes in the polarization state of the optical signal attenuates the magnitude of the output electrical signal of the optical receiver.

This paper is intended to demonstrate the effect of coupled long-range surface plasmon polaritons (LRSPPs) on the optical response of a lamellar grating nanostructure with organic material on the surface. This phenomenon gives rise to a selective spectral response and a local field enhancement which can be used in the context of nano-optics. This novel structure of nanofabricated device, consisting of coupled organic/metal nanostructure with specific width and symmetric dielectric structure. By designing the size and shape of the grating nanostructure, and the location of the organic Alq3 relative to the surfaces, Alq3 can be quenched, display increases in emission quantum yield, and decreasing the lifetimes. The combinations of organic/metal interface LRSPP mode can emit specific direction rather than isotropic emission. We discuss recent experimental results and potential applications in biosensor, organic light emitting diodes (OLEDs), polymer laser and organic solar cells of organic/metal ...

We demonstrate resonance optical trapping of individual dye-doped polystyrene particles with blue- and red-detuned lasers whose energy are higher and lower compared to electronic transition of the dye molecules, respectively. Through the measurement on how long individual particles are trapped at the focus, we here show that immobilization time of dye-doped particles becomes longer than that of bare ones. We directly confirm that the immobilization time of dye-doped particles trapped by the blue-detuned laser becomes longer than that by the red-detuned one. These findings are well interpreted by our previous theoretical proposal based on nonlinear optical response under intense laser field. It is discussed that the present result is an important step toward efficient and selective manipulation of molecules, quantum dots, nanoparticles, and various nanomaterials based on their quantum mechanical properties.. © 2017 Optical Society of America. Full Article , PDF Article ...

TY - JOUR. T1 - Control of the nonlinear response of bulk GaAs induced by long-wavelength infrared pulses. AU - Matteo, D.. AU - Pigeon, J.. AU - Tochitsky, S. Y.A.. AU - Huttner, U.. AU - Kira, M.. AU - Koch, S. W.. AU - Moloney, J. V.. AU - Joshi, C.. N1 - Funding Information: Air Force Office of Scientific Research (FA9550-16-1-0139 DEF, FA9550-19-1-0032); Office of Naval Research MURI (N00014-17-1-2705); Deutsche Forschungsgemeinschaft (SFB1083). Publisher Copyright: © 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement. PY - 2019/10/14. Y1 - 2019/10/14. N2 - The nonlinear optical response of GaAs is studied using extremely nonresonant 10 µm laser pulses with peak intensities greater than 2 GW/cm2. We observe over an order of magnitude enhancement in the four-wave mixing efficiency by decreasing the CO2 laser beat-wave frequency. This enhancement is attributed to currents of photoexcited unbound carriers modulated at the beat frequency, confirmed by ...