two-level laser
Смотреть что такое "two-level laser" в других словарях:
two-level laser — dvilygmenis lazeris statusas T sritis fizika atitikmenys: angl. two level laser vok. Zweiniveaulaser, m rus. двухуровневый лазер, m pranc. laser à deux niveaux, m … Fizikos terminų žodynas
laser à deux niveaux — dvilygmenis lazeris statusas T sritis fizika atitikmenys: angl. two level laser vok. Zweiniveaulaser, m rus. двухуровневый лазер, m pranc. laser à deux niveaux, m … Fizikos terminų žodynas
laser — /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; … Universalium
Laser — For other uses, see Laser (disambiguation). United States Air Force laser experiment … Wikipedia
Two-state quantum system — In quantum mechanics, a two state system (a.k.a. TLS=Two Level System) is a system which has two possible states. More formally, the Hilbert space of a two state system has two degrees of freedom, so a complete basis spanning the space must… … Wikipedia
Two-photon absorption — (TPA) is the simultaneous absorption of two photons of identical or different frequencies in order to excite a molecule from one state (usually the ground state) to a higher energy electronic state. The energy difference between the involved… … Wikipedia
Level sensor — Level sensors are used to detect liquid level. The liquid to be measured can be inside a container or can be in its natural form (e.g. a river or a lake). The level measurement can be either continuous or point values. Continuous level sensors… … Wikipedia
Laser absorption spectrometry — (LAS) refers to techniques that utilize lasers to assess the concentration or amount of a species in gas phase by absorption spectrometry (AS).It is well known that optical spectroscopic techniques in general and laser based techniques in… … Wikipedia
Laser cooling — refers to the number of techniques in which atomic and molecular samples are cooled through the interaction with one or more laser light fields. The first example of laser cooling, and also still the most common method of laser cooling (so much… … Wikipedia
Laser guide star — Laser guide stars are a form of artificial star created for use in astronomical adaptive optics imaging. Adaptive optics (AO) systems require a wavefront reference source in order to correct atmospheric distortion of light (called astronomical… … Wikipedia
Laser safety — A typical laser warning symbol. Laser safety is safe design, use and implementation of lasers to minimize the risk of laser accidents, especially those involving eye injuries. Since even relatively small amounts of laser light can lead to… … Wikipedia
