laser diode

Coherent light chip

A laser diode is a semiconductor device that produces coherent light when electric current passes through it.

Unlike conventional light-emitting diodes, laser diodes emit a narrow, focused beam.

They're found in fiber optic communications, barcode scanners, laser pointers, CD and DVD players, and laser printers.

The laser diode in my cat's toy finally burned out.

physics

semiconductor

Partial electrical conductor

recombination · waveguide · mirrors · coherence · monochromatic · wavelength · infrared · population inversion · resonator

applications

fiber-optics

Light-based data transmission

Blu-ray · optical mouse · range finder · welding · cutting · engraving · lithography · surgery · metrology · spectroscopy

beam

light

Visible electromagnetic radiation

focusing · irradiation · polarization · diffraction · far-field · near-field · astigmatism · multimode · power density

telecommunications

fiber-optic

Light-carrying cable technology

multiplexing · transceiver · digital signal · long-haul · narrowband

types

tunable

Able to be calibrated

visible · near-infrared · ultraviolet

Opposites
laser gain medium type

laser diodeCO2 laser

Gas-based infrared beam device

light source coherence

laser diodeincandescent bulb

Light from heated filament

fluorescent lamp · incandescent lamp · candle · LED · arc lamp

semiconductor optical device function

laser diodephotodiode

Light-to-current semiconductor

photodetector · photovoltaic cell · solar cell · phototransistor · light sensor

Family

laser, lasers, diode, lasered, diodes, photodiode, photodiodes, laserlike

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Rated G