180 terms
Photonics Dictionary: L
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laser, gas -> gas laserOne of the first lasers to find practical application. Generally, the pumping mechanism is an electric discharge, although some high-power forms employ chemical reaction or gas compression and...
laser-excited Shpol'skii spectroscopyA type of fluorescence spectroscopy in which an excimer laser, a dye laser and a frequency-doubling device are used to detect polycyclic hydrocarbon atoms to a part-per-billion level.
laser-induced cut and patchA process used in the design, repair and customization of integrated circuits. A low-power laser etches a silicon wafer placed inside a gas-filled vacuum chamber, initiating a chemical reaction.
laser-induced damage -> laser damageA natural or mechanical system adversely affected by the influence of laser radiation. During laser damage the common effect of the radiation on the surface of interest is heat accumulation due to...
laser-induced fluorescence spectroscopyA pump-probe technique whereby a single wavelength source may be used in order to excite a given sample to determine electronic transitions.
laser-induced fluorescenceLaser-induced fluorescence (LIF) is a spectroscopic technique that involves using a laser to excite molecules or atoms, leading to their emission of fluorescence light. This technique is widely used...
laser-light-scattering photometerA scattering photometer using scattered light in the solid angle 4.51+0 19° with respect to the forward direction, and an impactor with a rectangular jet. Scattered light intensities of entering...
laser-mediated gene transferLaser-mediated gene transfer refers to a technique in molecular biology and genetic engineering that utilizes lasers to introduce genetic material into cells. This method is a type of gene delivery...
laser-triggered switchingA process by which the ionizing capabilities of a laser beam are used to break initiate conduction between pairs of electrodes charged below the self-breakdown voltage of the insulating medium.
laserblade scalpelA contact tip made of artificial sapphire (AlO2) that allows surgeons to use laser power to cut and coagulate tissue simultaneously.
lasercavingA machining process that uses a laser to cut three-dimensional molds or models.
lasiklaser-assisted in situ keratomileusis
lasing mediumThe material that produces stimulated emission from within a laser oscillator. Laser gain media may vary from extended-length glass fibers to submicron-length semiconductor material.
lasing thresholdThe lowest excitation power level at which a laser's output is mainly the result of stimulated emission rather than spontaneous emission.
LASSlaser-activated silicon switch; laser spark spectroscopy
LASSOlaser search and secure observer
lateral modeIn a diode laser, a mode in the plane of the active layer that is perpendicular to the direction of the emitted beam.
lateral shearing interferometerA lateral shearing interferometer is an optical device used in interferometry to measure phase differences between two beams of light. Interferometry is a technique that combines and analyzes...
latticeIn photonics, a lattice refers to a periodic arrangement of optical elements or structures, often on a microscopic or nanoscopic scale. These optical lattices can be created using various techniques...
LBIClaser-beam-induced current
LBPlaser beam printer
LCLlaser communication link
LCMlaser cloud mapper
LCVDlaser chemical vapor deposition
LDlaser desorption
LDAlaser Doppler anemometry
LDDlaser diode driver
LDSlaser dazzle system
LDVlaser Doppler velocimeter
leading edge spikeIn a sequence of laser pulse emissions, the intitial pulse that often helps initiate a reaction at the target surface, whereas the trailing edge maintains the reaction.
LEEDlaser-energized explosive device; low-energy electron diffraction
LEGSlaser electron gamma source
lens blankA lens blank is a piece of optical material in a raw, unfinished state, typically in the form of a disk or block, from which lenses are eventually fabricated. Lens blanks are made from various...
LEOSLasers & Electro-Optics Society (of IEEE)
LFBRlaser fusion breeder reactor
LFMlaser feedback microscope; lateral force microscope; longitudinal field modulator
LGWSlaser-guided weapons system
LIALaser Institute of America
LIBORSlaser ionization based on resonance saturation
LIBSlaser-induced breakdown spectroscopy
LICAPlaser-induced cut and patch
LIDlinear imaging device; laser injection diode; local injection detection
lidarLidar, short for light detection and ranging, is a remote sensing technology that uses laser light to measure distances and generate precise, three-dimensional information about the shape and...
LIDTlaser-induced damage testing
LIFSlaser-induced fluorescence spectroscopy
light modulatorA device that is designed to modulate a beam of light, usually from a laser source, by acting upon the beam directly. The three general types of devices operate in an acousto-optic, electro-optic or...
light sourceThe generic term applied to all sources of visible radiation from burning matter to ionized vapors and lasers, regardless of the degree of excitation.
LIGOlaser interferometer gravitational wave observatory
LILlaser integration line
LIMAlaser-induced mass analysis
Photonics DictionaryL