Frequency Addition Source of Optical Radiation

Frequency Addition Source of Optical Radiation

In physics, a FASOR is an acronym for Frequency Addition Source of Optical Radiation. It is a device similar to a laser where the emitted light is produced in a sum-frequency generation process from two laser sources that operate at a different wavelength. The "frequencies" of the sources add directly to a summed frequency. Thus, if the source wavelengths are lambda_1 and lambda_2, the resulting wavelength is: lambda = left(frac{1}{lambda_1} + frac{1}{lambda_2} ight)^{-1}.

Applications

The FASOR in the image is used for laser guide star experiments. It is tuned to D2A hyperfine component of the sodium D line and used to excite sodium atoms in the mesospheric upper atmosphere. It consists of single frequency injection locked lasers close to 1064 and 1319 nm that are both resonant in a cavity containing a Lithium Triborate (LBO) crystal which sums the frequencies yielding 589.158 nm light.


Wikimedia Foundation. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • radiation — radiational, adj. /ray dee ay sheuhn/, n. 1. Physics. a. the process in which energy is emitted as particles or waves. b. the complete process in which energy is emitted by one body, transmitted through an intervening medium or space, and… …   Universalium

  • Optical tweezers — (originally called single beam gradient force trap ) are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch… …   Wikipedia

  • Optical fiber — A bundle of optical fibers A TOSLINK fiber optic audio c …   Wikipedia

  • radiation measurement — ▪ technology Introduction       technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement.       The term ionizing radiation refers to those… …   Universalium

  • Optical parametric oscillator — Infrared optical parametric oscillator An optical parametric oscillator (OPO) is a parametric oscillator which oscillates at optical frequencies. It converts an input laser wave (called pump ) into two output waves of lower frequency (ωs,ωi) by… …   Wikipedia

  • Electromagnetic radiation — Electromagnetism Electricity · …   Wikipedia

  • FASOR — Saltar a navegación, búsqueda Para el vector utilizado para representar una onda, véase fasor. En física del láser, FASOR es el acrónimo del inglés Frequency Addition Source of Optical Radiation (Fuente de Radiación Óptica por Suma de… …   Wikipedia Español

  • FASOR — can refer to: * FASOR (laser physics), Frequency Addition Source of Optical Radiation * Forward Air Spring Operated Return, a part of a paintball gun * Forward Area Sonar Research * Army Family Advocacy System of Records * Fasor , a Hungarian… …   Wikipedia

  • Fasor — Para las siglas de Frequency Addition Source of Optical Radiation, véase FASOR. Diagrama vectorial de la impedancia de distintos elementos de un circuito expresada de forma fasorial. El vector rojo es la impedancia total en serie, suma de los… …   Wikipedia Español

  • Cosmic microwave background radiation — CMB and Cosmic background radiation redirect here. For other uses see CMB (disambiguation) and Cosmic background (disambiguation). Physical cosmology …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”