• Ti-sapphire lasers are tunable lasers which emit red and near-infrared light (700 nm- 1100 nm).Ti-sapphire laser systems use Ti-sapphire as a gain medium. (wikipedia.org)
  • Solid-state lasers are usually pumped by flashlamps or light from another laser. (wikipedia.org)
  • Some lasers do not use an optical cavity, but instead rely on very high optical gain to produce significant amplified spontaneous emission (ASE) without needing feedback of the light back into the gain medium. (wikipedia.org)
  • Such lasers are said to be superluminescent, and emit light with low coherence but high bandwidth. (wikipedia.org)
  • Gas lasers use high-voltage, low-current power sources to supply the energy needed to excite the gas mixture used as a lasing medium. (wikipedia.org)
  • Ruby lasers produce pulses of coherent visible light at a wavelength of 694.3 nm, which is a deep red color. (wikipedia.org)
  • Ruby is one of the few solid state lasers that produce light in the visible range of the spectrum, lasing at 694.3 nanometers, in a deep red color, with a very narrow linewidth of 0.53 nm. (wikipedia.org)
  • The second factor, still an ongoing concern, is the absence of ultraviolet (UV) light in the super-continuum system. (phys.org)
  • Optical filters comprising a small concentration of visible light absorbing components optionally in combination with small concentrations of ultraviolet and infared absorbing components suitable for use in an illuminator for an accelerated weathering device and methods of accelerated weathering. (google.com)
  • 10. The accelerated weathering device of claim 8 wherein the ultraviolet transmissive optical filter provides at least 60% transmission of light at 250 nm and at least 80% transmission of light at 300 nm. (google.com)
  • The body cavity of the patient is then irradiated with ultraviolet light radiation in a preferred range of about 250 nm to 270 nm so as to kill or debilitate microorganisms lining the body cavity without serious destruction of the body tissue of the patient to thereby improve or alleviate one or more of the symptoms of the gastrointestinal ailment. (google.com)
  • A low cost optical system which incorporates a low ultraviolet output tungsten halogen light source and solid state photodetectors and circuitry in such a way as to provide reliable fluorometric test results. (google.com)
  • The attainment of reliable results using such components is made possible by incorporating highly ultraviolet transmissive optics to maximize ultraviolet light throughput and by using solid state circuitry together with a filter wheel having both light blocking and light passing regions in a manner which fully accounts for noise and dark signals associated with solid state photodetectors. (google.com)
  • Utilizing a number of different light sources, including visible light, xenon arc solar simulators, and fluorescent ultraviolet radiation sources, our scientists can design specialized exposure conditions and custom light source configurations for any product. (criver.com)
  • Charles River can assess the effects of exposure to visible light and ultraviolet radiation on ocular structures. (criver.com)
  • Both of these sources provide a suitable spectrum of ultraviolet light that induces chemiluminescence. (wikipedia.org)
  • This can be divided into five regions in increasing order of wavelengths: Ultraviolet C or (UVC) range: 100-290 nm Ultraviolet B or (UVB) range: 290-320 nm Ultraviolet A or (UVA) range: 320-400 nm Visible range or light: 400-700 nm Infrared range. (wikipedia.org)
  • The lamps consist of a small fused quartz or ceramic arc tube which contains the gases and the arc, enclosed inside a larger glass bulb which has a coating to filter out the ultraviolet light produced. (wikipedia.org)
  • Xenon is also used as a component of gas mixtures when production of ultraviolet radiation is required, e.g. in plasma displays, usually to excite a phosphor. (wikipedia.org)
  • First, light is generated in an optical, fiber-based, mode-locked, multi-watt laser that emits pulses of several hundred femtoseconds duration at a rate that is controllable between 1 MHz and 80 MHz. (phys.org)
  • A laser only emits light of high irradiance at a very narrow wavelength interval, typically under 0.01 nm, which makes an excitation monochromator or filter unnecessary. (wikipedia.org)
  • Atlas' xenon arc solar simulator laboratory weathering instruments (Ci-Series Weather-Ometers, Xenotest and SUNTEST series) are the global standards for artificial accelerated laboratory testing of building product materials and components. (atlas-mts.com)
  • It is the most common form of artificial lighting and is essential to modern society, providing interior lighting for buildings and exterior light for evening and nighttime activities. (wikipedia.org)
  • Artificial sunlight is the use of a light source to simulate sunlight where the unique characteristics of sunlight are needed, but where sufficient natural sunlight is not available or is not feasible. (wikipedia.org)
  • It is further divided into three types on the basis of wavelength: Infrared-A: 700-1400 nm Infrared-B: 1400-3000 nm Infrared-C: 3000-1000000 nm It has been claimed that artificial light sources that provide the light of the closest possible spectrum as provided by the Sun have beneficial effects on health and productivity. (wikipedia.org)
  • Artificial sunlight (solar simulators) are also used for sun light exposure testing and of color fastness and material stability for textile, plastics and paints. (wikipedia.org)
  • But even without a UV component, the team wanted to determine how well their simulator performs compared to results with xenon-source measurements taken on exactly the same materials by colleagues at the Department of Energy's National Renewable Energy Laboratory (NREL) in nearby Golden, CO, which is the federal agency responsible for certifying the efficiencies of different PV materials. (phys.org)
  • Short arc lamps operate at elevated temperatures of up to 900°C. and contain very high pressure usually in excess of 10 atmospheres. (google.com)
  • Full-field light-adapted electroretinograms (ERGs) were recorded from anesthetized mice using a conductive fiber electrode. (arvojournals.org)
  • 6. The method of claim 5 , wherein said source of light is a continuous source of light and said controller changes the voltage applied to said nozzle with respect to said counter electrode or said mass spectometer inlet. (google.com)
  • Plasma filaments extend from the inner electrode to the outer glass insulator, giving the appearance of multiple constant beams of colored light (see corona discharge and electric glow discharge). (wikipedia.org)
  • Plasma filaments extend from the inner electrode to the outer glass insulator, giving the appearance of moving tendrils of colored light within the volume of the globe (see corona discharge and electric glow discharge). (wikipedia.org)
  • The Xenotest Beta+ FD is a premium stand-alone rotating rack xenon instrument with a 4000 cm 2 exposure area. (atlas-mts.com)
  • Our team can perform assessments of light exposure under surgical conditions using UVR, visible or near-infrared sources as well evaluate as the potential damage to thoracic and abdominal organs in rodents. (criver.com)
  • Depending on which property of light is controlled, modulators are called intensity modulators, phase modulators, polarization modulators, spatial light modulators. (wikipedia.org)
  • Conventionally, fluorometers employ an optical system to subject a fluid sample, or a sample containing a fluorescent dye or tag material, to light energy at a first wavelength and cause emission of fluorescent light at a longer wavelength from the sample. (google.com)
  • This allows only light in a very narrow frequency range to resonate in the cavity and be emitted as laser emission. (wikipedia.org)
  • Cryoluminescence is the emission of light when an object is cooled. (wikipedia.org)
  • Thermoluminescence is light from the re-emission of absorbed energy when a substance is heated. (wikipedia.org)
  • The gain medium is excited by the pump source to produce a population inversion, and it is in the gain medium that spontaneous and stimulated emission of photons takes place, leading to the phenomenon of optical gain, or amplification. (wikipedia.org)
  • Light from the medium, produced by spontaneous emission, is reflected by the mirrors back into the medium, where it may be amplified by stimulated emission. (wikipedia.org)
  • Its presence in the arc plasma greatly increases the intensity of visible light produced by the arc for a given power input, as the metals have many emission spectral lines in the visible part of the spectrum. (wikipedia.org)
  • By contrast, a xenon arc has a continuous emission spectrum with nearly constant intensity in the range from 300-800 nm and a sufficient irradiance for measurements down to just above 200 nm. (wikipedia.org)
  • Typically in IBBCEAS, the wavelength selection of the transmitted light takes place after the cavity by either dispersive or interferometric means. (wikipedia.org)
  • HID lamps are typically used when high levels of light over large areas are required, and when energy efficiency and/or light intensity are desired. (wikipedia.org)
  • The active laser medium (laser gain/amplification medium) is a synthetic ruby rod that is energized through optical pumping, typically by a xenon flashtube. (wikipedia.org)
  • typically, but not necessarily, visible light. (wikipedia.org)
  • Fixtures require an electrical connection to a power source, typically AC mains power, but may also have battery power for camping or emergency lights. (wikipedia.org)
  • A surgical apparatus has a body portion that includes a shaft terminating in a distal head or tip and a means for directing light radiation from the apparatus onto the lining of a body cavity for treating a gastrointestinal ailment of a patient including gastritis, gastric ulcer, duodenal ulcer, gastric. (google.com)
  • 8. The apparatus of claim 1 wherein the shaft is a fiber optic bundle, the radiation source is a light source that is coupled to a proximal end of the fiber optic bundle and is located outside of the body of the patient for passing light energy through the fiber optic bundle into the body cavity of the patient to destroy the microorganisms. (google.com)
  • The heat generated by the arc and electrodes then ionizes the mercury and metal halides into a plasma, which produces an increasingly-brighter harsh white light as the temperature and pressure increases to operating conditions. (wikipedia.org)
  • There are two different approaches to handling the selection of incident light that gives way to different types fluorometers. (wikipedia.org)
  • The difference between them is the way they select the wavelengths of incident light. (wikipedia.org)
  • A proportion of the incident light is absorbed by the sample, and some of the molecules in the sample fluoresce. (wikipedia.org)
  • The laser diode then couples the light into a fiber where it will be confined. (wikipedia.org)
  • The pump light from the laser diode will excite a state in the doped fiber which can then drop in energy causing a specific wavelength to be emitted. (wikipedia.org)
  • Aequorea victoria Antarctic krill Biophotons Cavitation bubbles Foxfire Glowworm Luciferase Panellus stipticus Parchment worm Piddock Cathodoluminescence is light resulting from a luminescent material being struck by the electrons. (wikipedia.org)
  • The light emitted by a spark does not come from the current of electrons itself, but from the material medium fluorescing in response to collisions from the electrons. (wikipedia.org)
  • Corrosion salt spray (fog) or humidity testing to common steady-state and cycling (wet/dry) test, as well as alternating with Xenon or UVTest instruments, can be performed in our USA commercial laboratory. (atlas-mts.com)
  • Dennis and Schlager produced a design that makes controllable spectral modifications to the super-continuum light and uses the output to illuminate different PV materials. (phys.org)
  • That fiber output is then directed into a prism which splits the light into its spectral components and directs them at a mirror. (phys.org)
  • Papilionid butterflies have evolved a fourth, red-sensitive opsin ( Fig. 1 ) expressed in four receptors in a subset of ommatidia ( Arikawa, 2003 ), and behavioral experiments have proved that this enables them to discriminate colors in the L range, e.g. spectral lights of 590 and 640 nm wavelength ( Kelber and Pfaff, 1999 ). (biologists.org)
  • The spark ionizes the air, which becomes conductive and allows an arc to form, which sustains ionization and hence conduction. (wikipedia.org)
  • Because the different wavelengths are spread out in space, inserting masks at selected points in the light before it hits the mirror will shape the spectrum to resemble sunlight by subtracting out specific wavelengths. (phys.org)
  • A novel device that uses only sunlight and wastewater to produce hydrogen gas could provide a sustainable energy source while improving the efficiency of wastewater treatment. (rexresearch.com)
  • The only energy sources are wastewater and sunlight," Li said. (rexresearch.com)
  • The technique is realized using incoherent sources of radiation e.g. (wikipedia.org)
  • The incoherent source of radiation is spectrally filtered to match the bandwidth of the high reflectivity cavity mirrors. (wikipedia.org)
  • Radioluminescence is light resulting from bombardment by ionizing radiation. (wikipedia.org)
  • Dennis' co-worker, John Schlager, came up with the idea of exploiting a technology that had just become commercially available: a "super-continuum" white-light laser system. (phys.org)
  • The laser output is sent to a prism which splits the light into its constitutent wavelengths. (phys.org)
  • Recent advances in the power and spread of light from LED bulbs means that LED light sources are now able to offer a valid alternative to Laser and Xenon Arc products. (wikipedia.org)
  • A later production version used a microprocessor to sample and process the pitch/roll gyro information and a HeNe laser as a light source for the projector. (wikipedia.org)
  • This type of projection technology is now commonly used in laser light shows. (wikipedia.org)
  • A laser is constructed from three principal parts: An energy source (usually referred to as the pump or pump source), A gain medium or laser medium, and Two or more mirrors that form an optical resonator. (wikipedia.org)
  • The pump source is the part that provides energy to the laser system. (wikipedia.org)
  • Examples of pump sources include electrical discharges, flashlamps, arc lamps, light from another laser, chemical reactions and even explosive devices. (wikipedia.org)
  • Other optical devices, such as spinning mirrors, modulators, filters, and absorbers, may be placed within the optical resonator to produce a variety of effects on the laser output, such as altering the wavelength of operation or the production of pulses of laser light. (wikipedia.org)
  • Laser pumping is the act of energy transfer from an external source into the gain medium of a laser. (wikipedia.org)
  • Laser vaporization Laser vaporization source can be used to create clusters of various size and polarity. (wikipedia.org)
  • Pulsed arc cluster ion This is similar to laser vaporization, but an intense electric discharge is used to evaporate the target metal. (wikipedia.org)
  • Recently the RepRap project, which historically worked on fused filament fabrication, expanded to development of open source laser welding systems. (wikipedia.org)
  • When flashed, a pulse of light lasting about two milliseconds is emitted by the laser. (wikipedia.org)
  • Because of its high pulsed power and good coherence length, the red 694 nm laser light is preferred to the 532 nm green light of frequency-doubled Nd:YAG, which often requires multiple pulses for large holograms. (wikipedia.org)
  • Strong introduced the Super Trouper II model xenon follow spot in 1995 as the first new follow spot design since the xenon Gladiator III in 1983. (wikipedia.org)
  • Luminous efficacy Photometry (optics) A CD spectrometer Color spectrographs of common light sources The Double Amici Prism Hand-Held Spectroscope in Practice - Dozens of raw visible spectra of a wide variety of light sources. (wikipedia.org)
  • The thermal energy is often projected onto the stage with the visible light, and thousands of watts of incandescent lighting can be uncomfortably hot for the actors on stage. (wikipedia.org)
  • A large-format slide projector (also often called large-format projector or large-image projector) is a kind of slide projector for large image projection which has a very powerful light source (up to 12 thousand watts using arc lamps). (wikipedia.org)
  • Specially designed reflectors are able to absorb and dissipate infrared at the fixture before the visible light reaches the stage. (wikipedia.org)
  • Once the arc tube reaches its running temperature, the sodium dissociates from the iodine, adding orange and reds to the lamp's spectrum from the sodium D line as the metal ionizes. (wikipedia.org)
  • Major examples of these are nucleic acid stains like DAPI and Hoechst (excited by UV wavelength light) and DRAQ5 and DRAQ7 (optimally excited by red light) which all bind the minor groove of DNA, thus labeling the nuclei of cells. (wikipedia.org)
  • The concept of using bandwidth limited wavelength light to enhance visualization of the ocular fundus has been researched previously For example, the term "rotfreiem licht" or red-free light was introduced in 1925 to the ophthalmic community as a method that would enhance the visual contrast of anatomical details of the fundus. (google.com)
  • The dichroic beamsplitter acts as a wavelength specific filter, transmitting fluoresced light through to the eyepiece or detector, but reflecting any remaining excitation light back towards the source. (wikipedia.org)
  • A basic IBBCEAS setup consists of an incoherent light source, collimation optics, the absorber of interest and a detector. (wikipedia.org)
  • Light transmitted through the cavity is detected using a suitable detector, for example, a monochromator / charge coupled device (CCD) combination interfaced with a computer. (wikipedia.org)
  • Most measurements are done by employing a sequence of ultrashort light pulses to initiate a process and record its dynamics. (wikipedia.org)
  • The width of the light pulses have to be on the same scale as the dynamics that is to be measured. (wikipedia.org)
  • Pulse shaping is to modify the pulses from the source in a well-defined manner, including manipulation on pulse's amplitude, phase and duration. (wikipedia.org)
  • They are still used in a number of applications where short pulses of red light are required. (wikipedia.org)
  • have studied in detail the influence of cavity parameters like the cavity length, mirror curvature and reflectivity, different light injection geometries on the IBBCEAS signal. (wikipedia.org)
  • The filtered light is passively coupled into a stable optical cavity formed by two mirrors. (wikipedia.org)
  • The optical resonator, or optical cavity, in its simplest form is two parallel mirrors placed around the gain medium which provide feedback of the light. (wikipedia.org)
  • The light may reflect from the mirrors and thus pass through the gain medium many hundreds of times before exiting the cavity. (wikipedia.org)
  • Usually, the action of ionizing the gas is violent and disruptive, often leading to sound (ranging from a snap for a spark plug to thunder for a lightning discharge), light and heat. (wikipedia.org)