The active laser medium (also called a gain medium or lasing medium) is the source of optical gain within a laser. The gain results from the stimulated...

A quantum dot laser is a semiconductor laser that uses quantum dots as the active laser medium in its light emitting region. Due to the tight confinement...

A fiber laser (or fibre laser in Commonwealth English) is a laser in which the active gain medium is an optical fiber doped with rare-earth elements such...

substance which can propagate waves or energy Active laser medium (also called gain medium or lasing medium), a quantum system that allows amplification...

laser is a laser that uses a gain medium that is a solid, rather than a liquid as in dye lasers or a gas as in gas lasers. Semiconductor-based lasers...

light," especially about the gain medium of a laser; when a laser is operating it is said to be "lasing". The terms laser and maser are also used for naturally...

A gas laser is a laser in which an electric current is discharged through a gas to produce coherent light. The gas laser was the first continuous-light...

Quantum dot laser – Semiconductor laser that uses quantum dots as the active laser medium Ruby laser – Solid-state laser Solid-state laser – Laser which uses...

not produce blue lasers. Blue, direct diode semiconductor lasers can be built using inorganic gallium nitride (GaN) or InGaN gain medium, upon which many...

ion laser is a gas laser that uses an ionized gas as its lasing medium. Like other gas lasers, ion lasers feature a sealed cavity containing the laser medium...

linewidth of 0.53 nm. The ruby laser is a three level solid state laser. The active laser medium (laser gain/amplification medium) is a synthetic ruby rod that...

Chemical laser Laser science Active laser medium Laser applications Laser construction List of lasers Deuterium fluoride laser List of laser articles...

An Er:YAG laser (erbium-doped yttrium aluminium garnet laser, erbium YAG laser) is a solid-state laser whose active laser medium is erbium-doped yttrium...

geometrical length ℓ {\displaystyle \ell } , homogeneously filled with an active laser medium of refractive index n {\displaystyle n} . We define the reference...

Laser cutting is a technology that uses a laser to vaporize materials, resulting in a cut edge. While typically used for industrial manufacturing applications...

A chemical laser is a laser that obtains its energy from a chemical reaction. Chemical lasers can reach continuous wave output with power reaching to megawatt...

CO2 laser produces a beam of infrared light with the principal wavelength bands centering on 9.6 and 10.6 micrometers (μm). The active laser medium (laser...

to Ring laser gyroscopes. Accelerometer Active laser medium Hemispherical resonator gyroscope Laser construction Laser science List of laser applications...

Laser hair removal is the process of hair removal by means of exposure to pulses of laser light that destroy the hair follicle. It had been performed...

Selective laser sintering (SLS) is an additive manufacturing (AM) technique that uses a laser as the power and heat source to sinter powdered material...

free-electron laser (FEL) is a fourth generation light source producing extremely brilliant and short pulses of radiation. An FEL functions much as a laser but...

first working Nd:YAG laser was invented in 1964. Neodymium-YAG is the most widely used active laser medium in solid-state lasers, being used for everything...

used. Power outputs for gas lasers can be much higher than solid-state lasers, reaching 25 kW. In fiber lasers, the main medium is the optical fiber itself...

waves have been associated with a spectral signature in the context of the Laser Interferometer Gravitational-Wave Observatory (LIGO). Spectroscopy is a...

Low-level laser therapy (LLLT), cold laser therapy, photobiomodulation (PBM) or red light therapy is a form of medicine that applies low-level (low-power)...

A laser diode (LD, also injection laser diode or ILD or semiconductor laser or diode laser) is a semiconductor device similar to a light-emitting diode...

Laser tag is a recreational shooting sport where participants use infrared-emitting light guns to tag designated targets. Infrared-sensitive signaling...

A dye laser is a laser that uses an organic dye as the lasing medium, usually as a liquid solution. Compared to gases and most solid state lasing media...

Laser science or laser physics is a branch of optics that describes the theory and practice of lasers.[citation needed] Laser science is principally concerned...

A laser pointer or laser pen is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i...