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laser diode Dictionary Terms

near-field walk
In a laser diode, lateral motion of the beam center at the facet when the drive current is changed.
far-field diffraction pattern
The diffraction pattern of a source such as a light-emitting diode, injection laser diode or the output end of an optical...
monitor current
In a laser diode, the photocurrent produced by a photodiode that detects the emission from the rear facet of the...
line-narrowed laser
A semiconductor laser in which the naturally occurring broad linewidth has been narrowed by incorporating the laser diode...
laser diode module
A laser diode module is a compact device that incorporates a laser diode, optics, and often other components into a single...
index-guided laser
A laser diode with an output beam contained in the active layer by means of a built-in refractive index profile formed in...
quasi-CW laser diode
A type of laser diode that operates at long pulsewidths.
facet erosion
The degradation of the facets in a laser diode due to the intensity of radiation.
field of collimator
An expression of the tolerance of decentration of a laser diode from the optical axis: the region around the axis in the...
smart pixel array
An array of active optical devices (modulators, laser diodes and/or detectors), each of whose electrical inputs or outputs...
laser diode array
A group of single emitter laser diodes, usually arranged vertically or horizontally with respect to each other. The power...
laser crystal
A laser crystal, also known as an active medium or gain medium, is a solid-state material used in the construction of...
embedded laser
The term "embedded laser" typically refers to a laser device that is integrated or embedded into a larger system or...
optoelectronics
Optoelectronics is a branch of electronics that focuses on the study and application of devices and systems that use light...
rear facet monitor
A photodetector mounted in the same package as a laser diode that is positioned to monitor the output from the rear facet of...
fiber optic transceiver
A fiber optic transceiver, often simply referred to as an "optical transceiver," is a device used in fiber optic...
multistripe array
A monolithic laser diode incorporating multiple coupled emitters.
edge-emitting LED
An edge-emitting light-emitting diode is a type of LED structure where light emission occurs primarily along the edge of the...
gain-guided laser
A laser diode in which the beam is confined to the region of the active layer with gain high enough to accomplish such...
laser pen
Device consisting of a laser diode, beam-correcting optics and collimating optics in a single housing. Also called a...
distributed feedback laser
A distributed feedback laser (DFB laser) is a type of semiconductor laser diode designed to emit coherent, narrow-bandwidth...
modulation bandwidth
The highest frequency at which a laser diode can be driven and still be modulated acceptably that further results in the...
III-V material
In semiconductor physics and materials science, the term "III-V materials" refers to compounds composed of elements from...
surface-emitting laser diode
A semiconductor laser diode that emits light perpendicular to the active region. The output radiation is taken through the...
burn-in
The operation of a laser diode or other component prior to its use in its intended application, as a means of testing and...
GaAlAs laser
A GaAlAs laser is a type of semiconductor laser diode that emits light in the near-infrared region of the electromagnetic...
diode laser
A diode laser is a type of laser that uses a semiconductor diode as the active medium to generate coherent light....
monolithic lenslet module
An array of refractive microlenses that are round, square and hexagonal and as small as 15 µm. They are used for...
active region
The layer of material in a laser diode from which the optical radiation is emitted; light producing region
gallium nitride
Gallium nitride (GaN) is a compound made up of gallium (Ga) and nitrogen (N). It is a wide-bandgap semiconductor material...
erbium-doped fiber amplifier
An optical fiber that can be used to amplify an optical input. Erbium rare earth ions are added to the fiber core material...
vertical-cavity laser diode
A type of surface-emitting laser diode that uses dielectric mirrors to produce surface emission. The laser cavity is...
fiber laser
A fiber laser is a type of laser in which the active gain medium is an optical fiber doped with rare-earth ions such as...
laser hammering
Means of correcting laser postweld shift. The correction procedure is applied to optoelectronic systems such as laser diode...
facet
1. One of the plane-reflecting surfaces on a multisurfaced polygon. 2. The cleaved end mirror of a laser diode's active...
laser diode
photonic crystal surface-emitting laser
A photonic crystal surface-emitting laser (PCSEL) refers to a type of laser diode that emits light from its surface rather...
catastrophic optical damage
The darkening of the laser facet of a semiconductor laser diode. It can be prevented by placing the component in a...

(38 results found)

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