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...

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...

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...

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...

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...

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...

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...

An Er:glass laser (erbium-doped glass laser) is a solid-state laser whose active laser medium is erbium-doped glass. Ytterbium (Yb) is sometimes added...

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...

lasers use quantum dots as the active laser medium. These lasers exhibit device performance that is closer to gas lasers and avoid some of the disadvantages...

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

Laser-induced fluorescence (LIF) or laser-stimulated fluorescence (LSF) is a spectroscopic method in which an atom or molecule is excited to a higher...

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

are realized on opposite sides of a thin layer of active gain medium. Despite their name, disk lasers do not have to be circular; other shapes have also...

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

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

In laser physics, gain or amplification is a process where the medium transfers part of its energy to the emitted electromagnetic radiation, resulting...

population inversion which readies the lasing medium for amplification of a laser beam. A small amount of laser light, generated externally, was then fed...

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...

A laser lighting display or laser light show involves the use of laser light to entertain an audience. A laser light show may consist only of projected...

screen (e.g. Shtora), active laser self-defence weapon with laser dazzler (LSDW, used on the Chinese Type 99 main battle tank), laser jammer, etc. Detectors...

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

Laser science or laser physics is a branch of optics that describes the theory and practice of lasers. Laser science is principally concerned with quantum...

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

Acousto-optics Active laser medium Active optics Advanced Precision Kill Weapon System Advanced Tactical Laser Afocal system Airborne laser Airborne wind...

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...

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...

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...

Photorefractive keratectomy (PRK) and laser-assisted sub-epithelial keratectomy (or laser epithelial keratomileusis) (LASEK) are laser eye surgery procedures intended...