optically-excited laser
1Laser — For other uses, see Laser (disambiguation). United States Air Force laser experiment …
2Nd:YAG laser — with lid open showing frequency doubled 532 nm green light Nd:YAG laser rod …
3Chemical laser — A chemical laser is a laser that obtains its energy from a chemical reaction. Chemical lasers can achieve continuous wave output with power reaching to megawatt levels. They are used in industry for cutting and drilling. Common examples of… …
4Hybrid silicon laser — A hybrid silicon laser is a semiconductor laser fabricated from both silicon and group III V semiconductor materials. The hybrid silicon laser was developed to address the lack of a silicon laser to enable fabrication of low cost, mass producible …
5Active 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… …
6Solid-state laser — A solid state laser is a laser that uses a gain medium that is a solid, rather than a liquid such as in dye lasers or a gas as in gas lasers. Semiconductor based lasers are also in the solid state, but are generally considered as a separate class …
7Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… …
8Energy transfer upconversion — or ETU is a physical principle (most commonly encountered in solid state laser physics) that involves the excitation of a laser active ion to a level above that which would be achieved by simple absorption of a pump photon, the required… …
9Population inversion — In physics, specifically statistical mechanics, a population inversion occurs when a system (such as a group of atoms or molecules) exists in state with more members in an excited state than in lower energy states. The concept is of fundamental… …
10Photoelectrochemical processes — Photons emitted in a coherent beam from a laser Composition {{{composition}}} Interactions Electromagnetic, Optical, C …
