erbium glass laser
1Erbium — (pronEng|ˈɝbiəm) is a chemical element with the symbol Er and atomic number 68. A rare, silvery, white metallic lanthanide, erbium is a solid in its normal state. It is a rare earth element associated with several other rare elements in the… …
2Laser — For other uses, see Laser (disambiguation). United States Air Force laser experiment …
3laser — /lay zeuhr/, n. Physics. a device that produces a nearly parallel, nearly monochromatic, and coherent beam of light by exciting atoms to a higher energy level and causing them to radiate their energy in phase. Also called optical maser. [1955 60; …
4Laser construction — A laser is constructed from three principal parts:*An energy source (usually referred to as the pump or pump source ), *A gain medium or laser medium , and *Two or more mirrors that form an optical resonator . Pump sourceThe pump source is the… …
5Différents types de laser — Liste des différents types de laser Ceci est une liste des différents types de lasers avec la longueur d onde sur laquelle ils opèrent et leurs applications. Il existe plusieurs milliers de sortes de lasers mais la plupart d entre eux ne sont… …
6Liste des différents types de laser — Ceci est une liste des différents types de lasers avec la longueur d onde sur laquelle ils opèrent et leurs applications. Il existe plusieurs milliers de sortes de lasers mais la plupart d entre eux ne sont utilisés que dans le cadre de… …
7Solid-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 …
8Active 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… …
9Neodymium — praseodymium ← neodymium → promethium ↑ Nd ↓ U …
10Mathematics 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… …
