lasing cavity
31Amplified spontaneous emission — (ASE) or superluminescence is light, produced by spontaneous emission, that has been optically amplified by the process of stimulated emission in a gain medium.Origins and problemsASE is produced when a laser gain medium is pumped to produce a… …
32Astrophysical maser — An astrophysical maser is a naturally occurring source of stimulated spectral line emission, typically in the microwave portion of the electromagnetic spectrum. This emission may arise in molecular clouds, comets, planetary atmospheres, stellar… …
33Light-emitting diode — LED redirects here. For other uses, see LED (disambiguation). Light emitting diode Red, pure green and blue LEDs of the 5mm diffused type Type Passive, optoelectronic Working principle Electr …
34Active laser medium — The active laser medium or gain 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… …
35Free electron laser — A free electron laser, or FEL, is a laser that shares the same optical properties as conventional lasers such as emitting a beam consisting of coherent electromagnetic radiation which can reach high power, but which uses some very different… …
36Ion laser — An ion laser is a gas laser which uses an ionized gas as its lasing medium. [GoldBookRef|title=ion laser|file=I03219] Like other gas lasers, ion lasers feature a sealed cavity containing the laser medium and mirrors forming a Fabry Perot… …
37Ruby laser — A ruby laser is a solid state laser that uses a synthetic ruby crystal as its gain medium. It was the first type of laser invented, and was first operated by Theodore H. Ted Maiman [Maiman, T.H. (1960) Stimulated Optical Radiation in Ruby .… …
38Slope efficiency — The slope efficiency is an important property of a laser. It is obtained by plotting the laser output power against the input pump power. Above the lasing threshold, the resulting curve is usually close to a straight line. The slope efficiency is …
39McCumber relation — The McCumber relation (or McCumber theory) refers to the effective cross sections of absorption and emission of light in the physics of solid state lasers [1][2]. Contents 1 Definition 2 Gain …
