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Photonics Dictionary
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SS lasers x
channel substrate planar growth
The creation of a diode laser structure by liquid-phase epitaxy over a grooved substrate.
chelate laser
A laser having a rare-earth chelate within a plastic host as the lasing material. The chelate laser is easily pumped and has a high quantum efficiency and narrow emission lines.
chemical laser
A laser that relies on chemical activity instead of electrical energy to produce the pumping action necessary to form pulses of light.
chirped mirrors
Chirped mirrors are optical devices designed to manipulate the spectral properties of ultrashort laser pulses. They consist of multiple layers of dielectric coatings deposited on a substrate, where...
chirped-pulse amplification laser
A laser whose pulses are expanded, using gratings and optical fibers, before amplification and compressed to increase beam intensity without damage to the optical train.
chirped-pulse amplification
Chirped pulse amplification (CPA) is a technique used in laser physics to amplify ultrashort laser pulses to high energies without causing damage to the amplifying medium. The method was first...
choledochoscope
A small fiber optic endoscope used in laser surgery.
chromophore
A naturally occurring pigment in tissue that may selectively absorb certain wavelengths and can be used to aid in targeting the beam in laser surgery.
classification duration
For a laser, the maximum exposure time that the laser design allows; 0.25 seconds for a Class 2 laser.
CLEO
Conference on Lasers and Electro-Optics
CLSM
confocal laser scanning microscope
coaxial gas
A jet of inert gas along a laser welding beam's axis that cools, protects or cleans the work surface.
coherence length
That length over which energy in two separate waves remains constant. With respect to a laser, the greatest distance between two arms of an interferometric system for which sufficient interferometric...
coherent anti-Stokes Raman scattering
A technique whereby two laser beams, one at an excitation wavelength and the second at a wavelength that produces Stokes Raman scattering, interact coherently in a sample, producing a strong...
coherent anti-Stokes Raman spectroscopy
Coherent anti-Stokes Raman spectroscopy (CARS) is a powerful technique used in spectroscopy to probe molecular vibrations in a sample. It is based on the Raman effect, which involves the inelastic...
coherent communications
A fiber optic communications system that works on the principles of homodyning or heterodyning. The transmitting laser produces an optical wave that is modulated in amplitude, phase or frequency by...
coherent light source
A light source that is capable of producing radiation with waves vibrating in phase. The laser is an example of a coherent light source.
coherent optical adaptive technique
The use of phase conjugation or other methods to increase the power density of a laser beam under adverse atmospheric conditions.
cold atom
Cold atoms refer to atoms that have been cooled to extremely low temperatures, typically in the microkelvin (µK) to nanokelvin (nK) range, close to absolute zero (0 Kelvin or -273.15°C). At...
COLDS
common optoelectronics laser detection system
collateral radiation
Category inclusive of all radiation that is incited electronically, except laser radiation, as a function of the application of laser power to a system.
colliding pulse modelocked ring laser
A ring dye laser that uses prisms and a saturable absorber within the laser cavity to shape and shorten the pulses generated. Counterpropagating modes oscillating simultaneously in the ring...
collimator pen
->
laser pen
Device consisting of a laser diode, beam-correcting optics and collimating optics in a single housing. Also called a collimating pen.
collinear pumping
A method of exciting a laser by coupling it directly to another laser.
collisional excitation
A method of lasing in which free electrons in a laser-produced plasma collide with neonlike ions to excite electrons to states that decay at different speeds, producing a population inversion.
color center laser
Certain color centers in the alkali halides have been optically pumped to produce efficient tunable pulsed and continuous-wave (CW) lasers emitting in the range of 0.8 to 3.3 µm.
common optoelectronics laser detection system
A laser warning and countermeasure system containing a sensor that indicates the direction of a laser beam, and analytical instruments to determine pulse code, repetition frequency and wavelength.
computer-generated hologram
A computer-generated hologram (CGH) is a holographic image produced using computational methods and algorithms, rather than traditional optical techniques. CGHs are generated entirely in digital form...
computer-generated holographic scanner
A phase reflection scanner that eliminates the need for a complex translation device while maintaining a high-energy-density level during laser materials processing. These devices direct and focus...
conduction welding
A type of laser welding of thin materials using a defocused or low-power carbon dioxide laser beam. The energy is absorbed by the material through conduction and melts the material to produce an edge...
confocal resonator
A confocal resonator, also known as a confocal cavity or confocal laser resonator, is a type of optical resonator configuration used in laser systems. The term confocal in this context refers to the...
conjugator
->
phase conjugation
The use of a reflective device, which can be fashioned from a variety of materials including gases, solids, dyes, aerosols, semiconductor crystals and plasmas, to replicate a laser beam by reversing...
contact laser surgery
Laser surgery by means of a low-power laser system using a synthetic sapphire scalpel that transmits the laser light while in direct contact with the tissue.
continuous wave
Continuous wave (CW) refers to a type of signal or transmission where the signal is constant and does not vary with time. In various contexts, the term is used to describe continuous, uninterrupted...
continuous-wave laser
A laser that emits radiation continuously rather than in short bursts, as in a pulsed laser.
conversion efficiency
In a pumped laser system, the ratio of output energy to pump energy.
convexo-concave lens
->
meniscus lens
A meniscus lens is an optical lens that has one side that is concave (curved inward) and the other side that is convex (curved outward). It can be categorized into two types based on its optical...
copper vapor laser
->
metal vapor laser
Devices in which the lasing medium is a vapor of metal atoms or ions, sometimes mixed with another gas. Metal vapor lasers use a variety of metal types to generate a variety of laser lines for...
core-coupled lens
A semispherical or conical lens created directly on the core of an optical fiber to focus light from a laser into the fiber core.
corner cube
A corner cube, also known as a corner reflector or retroreflector prism, is a type of optical device used to reflect light or electromagnetic waves back towards their source with minimal deviation in...
corner-cube prism
->
corner cube
A corner cube, also known as a corner reflector or retroreflector prism, is a type of optical device used to reflect light or electromagnetic waves back towards their source with minimal deviation in...
corner-cube reflector
->
corner cube
A corner cube, also known as a corner reflector or retroreflector prism, is a type of optical device used to reflect light or electromagnetic waves back towards their source with minimal deviation in...
coumarin 314T
An efficient, readily soluble blue-green laser dye.
crystal laser
->
solid-state laser
A solid-state laser is a type of laser that uses a solid gain medium (as opposed to a liquid or gas) to produce coherent light. The term "solid-state" refers to the fact that the active medium, where...
cube-corner prism
->
corner cube
A corner cube, also known as a corner reflector or retroreflector prism, is a type of optical device used to reflect light or electromagnetic waves back towards their source with minimal deviation in...
current saturation
A condition during laser operation when laser output can no longer be increased by additional electric current.
custom optic
A custom optic refers to an optical component that is designed, manufactured, and tailored to meet specific requirements or applications. These optics can include lenses, mirrors, prisms, filters, or...
CVL
copper vapor laser
cylindrical lens
A cylindrical lens is an optical component that has different curvatures along its two orthogonal axes, resulting in a shape resembling a cylinder. Unlike spherical lenses, which have the same...
Dammann grating
A Dammann grating is a type of diffractive optical element (DOE) used to create an array of equally spaced, uniform-intensity spots or beams. It is named after its inventor, Dr. Herbert Dammann. The...
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Photonics Dictionary
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