Semiconductor lasers definition of Semiconductor lasers in the Free Online Encyclopedia.

laser diode

A semiconductor-based laser used to generate analog signals or digital pulses for transmission through optical fibers. Both laser diodes and LEDs (light-emitting diodes) are used for this purpose, but the laser diode generates a smaller beam that is easier to couple with the smaller core of singlemode fibers. Laser diodes are designed to emit light either from their edge or their surface, the latter providing a circular beam that couples better with the round core of the fiber.

Laser diodes work on the same principle as the bigger gas lasers. They function as an optical oscillator by stimulating a chain reaction of photon emission inside a tiny chamber. In edge-emitting lasers, the semiconductor waver is cleaved, and the inherent properties of the semiconductor create reflective ends that may or may not be enhanced with additional reflective films. With vertical cavity surface emitting lasers (VCSELs), the reflectivity has to be added.

The most common semiconductors used in laser diodes are compounds based on gallium arsenide (750 to 900 nm in the infrared), indium gallium arsenide phosphide (1200 to 1700 nm in the infrared) and gallium nitride (near 400 nm in the blue). See laser and solid state laser.

Laser Diodes

Laser diodes such as these are all fabricated using semiconductor processes just like CPU and memory chips. Note that the VCSELs (vixels) produce a circular beam that couples well with a fiber.

A Tunable Laser Diode

Laser diodes also make great sensors. This laser diode from Jet Propulsion Labs is tunable to different frequencies in order to detect various gases both on this and other planets. (Image courtesy of JPL's Microdevices Laboratory; Robert M. Brown, photographer)

laser diode [′lā·zər ¦dī‚ōd]

(optics)

semiconductor laser

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No references found	But recent advances in power efficiency, design and high temperature functionality have pushed this class of semiconductor lasers closer to real-world utility. The promise of the world's smallest lasers by Jean, Grace V. / National Defense It also explores new fields of research that include surface plasmonics and micro-ring resonators and the theory of optical gain and absorption in quantum dots and quantum wires and their uses in semiconductor lasers. Physics of photonic devices, 2d ed by SciTech Book News After dedicating considerable effort to understanding the dynamics of these injected charge carriers, Bhattacharya was ultimately able to use quantum dots to create a new type of laser that combined the best qualities from semiconductor lasers and atomic lasers. AF-funded engineer earns honors for scientific achievements by Lachance, Molly / Defense AT & L	semicircumference semiclosed-cycle gas turbine Semicoke Semicolon Semicolonial Territory semicoma semicompreg semiconducting compound semiconducting crystal semiconductive loading tube Semiconductor Semiconductor Avalanche Diode Semiconductor Detector Semiconductor Device Semiconductor Diode semiconductor disk semiconductor doping Semiconductor Electronics Semiconductor Heterojunction semiconductor heterostructure Semiconductor heterostructures semiconductor intrinsic properties semiconductor IP semiconductor junction Semiconductor Laser Semiconductor lasers Semiconductor Material semiconductor memory semiconductor rectifier Semiconductor Spectrometer semiconductor storage semiconductor thermocouple semiconductor trap Semiconductor, Amorphous Semiconductor, Organic semiconductor-diode parametric amplifier semiconjugate axis semiconservative replication Semicontinuous Function semicontrolled mosaic semiconvection semicratonic semicrystalline semicubical parabola semidense list semidesert Semidesert Zones Semidesert Zones of Subtropical Belts Semidesert Zones of Temperate Belts Semidesert Zones of Tropical Belts semidetached binary	Semiconductor Equipment Manufacturing Center Semiconductor Equipment Sales Associates, Inc Semiconductor fab Semiconductor fab Semiconductor fab Semiconductor Heterojunction semiconductor heterostructure Semiconductor heterostructures Semiconductor Holder Semiconductor Ignition Semiconductor Index Semiconductor Industry Association Semiconductor Industry Research Institute Semiconductor Industry Research Institute Japan Semiconductor Industry Suppliers Association Semiconductor Injection Laser Semiconductor Insulator Semiconductor Semiconductor Intellectual Property Semiconductor intellectual property core Semiconductor Interface Specialists Conference Semiconductor International Semiconductor International Capacity Statistics semiconductor intrinsic properties Semiconductor IP Semiconductor junction Semiconductor junction semiconductor laser semiconductor laser semiconductor laser Semiconductor lasers Semiconductor Manufacturers' Association Semiconductor manufacturing Semiconductor Manufacturing International Corp Semiconductor Manufacturing Operational Modeling and Simulation Semiconductor Manufacturing System Semiconductor Manufacturing Technology Semiconductor Manufacturing Technology Group Semiconductor Manufacturing Technology Workshop Semiconductor material Semiconductor material Semiconductor material Semiconductor material Semiconductor materials Semiconductor materials Semiconductor materials Semiconductor materials Semiconductor Materials & Equipment Semiconductor memories Semiconductor memory Semiconductor Microcavity Light Emitter Semiconductor Multiple-Compton Telescope Semiconductor nanocrystal Semiconductor Nanocrystals Semiconductor Nanofabrication Facility Semiconductor on Insulator Semiconductor Optical Amplifier Semiconductor Optical Amplifier Semiconductor Optical Amplifier Interferometric Wavelength Converter Semiconductor Optical Amplifier Wavelength Converter Semiconductor Oxide Nitride Oxide Semiconductor

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References in periodicals archive

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But recent advances in power efficiency, design and high temperature functionality have pushed this class of semiconductor lasers closer to real-world utility.

The promise of the world's smallest lasers by Jean, Grace V. / National Defense

It also explores new fields of research that include surface plasmonics and micro-ring resonators and the theory of optical gain and absorption in quantum dots and quantum wires and their uses in semiconductor lasers.

Physics of photonic devices, 2d ed by SciTech Book News

After dedicating considerable effort to understanding the dynamics of these injected charge carriers, Bhattacharya was ultimately able to use quantum dots to create a new type of laser that combined the best qualities from semiconductor lasers and atomic lasers.

AF-funded engineer earns honors for scientific achievements by Lachance, Molly / Defense AT & L

semicircumference

semiclosed-cycle gas turbine

Semicoke

Semicolon

Semicolonial Territory

semicoma

semicompreg

semiconducting compound

semiconducting crystal

semiconductive loading tube

Semiconductor