A laser which uses a forward biased semiconductor junction as the active medium. Also known as injection laser diode.
A semiconductor device that converts an electrical input into a coherent light output.
A semiconductor device which emits a laser beam.
Light Amplification by Stimulated Emission of Radiation. An electro-optic device that produces coherent light with a narrow range of wavelengths, typically centered around 780 nm, 1310 nm, or 1550 nm. Lasers with wavelengths centered around 780 nm are commonly referred to as CD Lasers.
A point light source or light emission aperture driven by laser beams.
A semiconductor diode that "lases", i.e. when pulsed, a laser diode emits coherent light: light of essentially one wave length, in phase traveling in the same direction.
A special semiconductor diode which emits a beam of coherent light.
A type of light source used in fiber optics and infrared links that generates a single frequency in the high end of the infrared spectrum
Semiconductor laser device. Laser diodes are cheap laser devices with very small dimensions. They are used in Audio-CD-players, CD-ROM-drives and fiber-optic data transmission systems. See also: fiber-optic data transmission system
a semiconducter device, usually of the gallium-arsenide type, that emits coherent light when a voltage is applied to its terminals
a semiconductor diode that emits coherent light by lasing
a specially designed LED in which all of the photons are copies of one another rather than being emitted independently by the individual electrons as they drop into their respective electron holes
coherent light source whose beam intensity can vary when a variable voltage is applied
A semiconductor laser is typically very small. The devices have traditionally been available in wavelengths from 635nm to 1550nm for singlemode devices. However recent developments have produced devices at 405nm & 440nm
A laser in which stimulated emission of coherent light occurs at a P-N junction when electrons and holes are driven into the junction by carrier injection, optical excitation, or other means.
A laser made from a semiconductor material, and powered by applying an electrical potential to the material. These are used in all laser bar code scanners today.
A semiconductor laser commonly used in bar code scanners.
(LD): A semiconductor that emits coherent light when forward biased.
A laser diode is a laser where the active medium is a semiconductor similar to that found in a light-emitting diode. The most common and practical type of laser diode is formed from a p-n junction and powered by injected electrical current. These devices are sometimes referred to as injection laser diodes to distinguish them from optically pumped laser diodes, which are more easily produced in the laboratory.