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- Active_laser_medium abstract "The active laser medium (also called gain medium or lasing medium) is the source of optical gain within a laser. The gain results from the stimulated emission of electronic or molecular transitions to a lower energy state from a higher energy statepreviously populated by a pump source.Examples of active laser media include:Certain crystals, typically doped with rare-earth ions (e.g. neodymium, ytterbium, or erbium) or transition metal ions (titanium or chromium); most often yttrium aluminium garnet (YAG), yttrium orthovanadate (YVO4), or sapphire (Al2O3);Glasses, e.g. silicate or phosphate glasses, doped with laser-active ions;Gases, e.g. mixtures of helium and neon (HeNe), nitrogen, argon, carbon monoxide, carbon dioxide, or metal vapors;Semiconductors, e.g. gallium arsenide (GaAs), indium gallium arsenide (InGaAs), or gallium nitride (GaN). Liquids, in the form of dye solutions as used in dye lasers.In order to lase, the active gain medium must be in a nonthermal energy distribution known as a population inversion. The preparation of this state requires an external energy source and is known as laser pumping. Pumping may be achieved with electrical currents (e.g. semiconductors, or gases via high-voltage discharges) or with light, generated by discharge lamps or by other lasers (semiconductor lasers). More exotic gain media can be pumped by chemical reactions, nuclear fission[citation needed], or with high-energy electron beams.".
- Active_laser_medium thumbnail LaserLevels1.png?width=300.
- Active_laser_medium wikiPageExternalLink active-medium.html.
- Active_laser_medium wikiPageExternalLink gain_media.html.
- Active_laser_medium wikiPageID "40692".
- Active_laser_medium wikiPageRevisionID "605141390".
- Active_laser_medium hasPhotoCollection Active_laser_medium.
- Active_laser_medium subject Category:Laser_gain_media.
- Active_laser_medium subject Category:Laser_science.
- Active_laser_medium type Abstraction100002137.
- Active_laser_medium type Company108058098.
- Active_laser_medium type Group100031264.
- Active_laser_medium type Institution108053576.
- Active_laser_medium type LaserGainMedia.
- Active_laser_medium type Organization108008335.
- Active_laser_medium type SocialGroup107950920.
- Active_laser_medium type YagoLegalActor.
- Active_laser_medium type YagoLegalActorGeo.
- Active_laser_medium type YagoPermanentlyLocatedEntity.
- Active_laser_medium comment "The active laser medium (also called gain medium or lasing medium) is the source of optical gain within a laser. The gain results from the stimulated emission of electronic or molecular transitions to a lower energy state from a higher energy statepreviously populated by a pump source.Examples of active laser media include:Certain crystals, typically doped with rare-earth ions (e.g.".
- Active_laser_medium label "Active laser medium".
- Active_laser_medium label "Lasermedium".
- Active_laser_medium label "Medio activo".
- Active_laser_medium label "Milieu amplificateur".
- Active_laser_medium label "Лазерные материалы".
- Active_laser_medium sameAs Lasermedium.
- Active_laser_medium sameAs Medio_activo.
- Active_laser_medium sameAs Milieu_amplificateur.
- Active_laser_medium sameAs m.0b4c5.
- Active_laser_medium sameAs Q1806565.
- Active_laser_medium sameAs Q1806565.
- Active_laser_medium sameAs Active_laser_medium.
- Active_laser_medium wasDerivedFrom Active_laser_medium?oldid=605141390.
- Active_laser_medium depiction LaserLevels1.png.
- Active_laser_medium isPrimaryTopicOf Active_laser_medium.
