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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Acousto-optic deflector ： ウィキペディア英語版 Acousto-optic deflector An acousto-optic deflector (AOD) spatially controls the optical beam. In the operation of an acousto-optic deflector the power driving the acoustic transducer is kept on, at a constant level, while the acoustic frequency is varied to deflect the beam to different angular positions. The acousto-optic deflector makes use of the acoustic frequency dependent diffraction angle, where a change in the angle $\backslash Delta\; \backslash theta\_d$ as a function of the change in frequency $\backslash Delta\; f$ given as,〔(【引用サイトリンク】 url =http://www.mt-berlin.com/frames_ao/descriptions/ao_deflectors.htm )〕 : $(12)\; \backslash \; \backslash Delta\; \backslash theta\_d\; =\; \backslash frac\backslash Delta\; f$ where $\backslash lambda$ is the optical wavelength and $\backslash nu$ is the velocity of the acoustic wave. AOD technology has made practical the Bose–Einstein condensation for which the 2001 Nobel Prize in Physics was awarded to Eric A. Cornell, Wolfgang Ketterle and Carl E. Wieman.〔(The Nobel Prize in Physics 2001 )〕 Another application of acoustic-optical deflection is optical trapping of small molecules. AODs are essentially the same as acousto-optic modulators (AOMs). In an AOM, only the amplitude of the sound wave is modulated (to modulate the intensity of the diffracted laser beam), whereas in an AOD, both the amplitude and frequency are adjusted, making the engineering requirements tighter for an AOD than an AOM. '' ==See also== *Acousto-optic modulator *Acousto-optics *Nonlinear optics *Sonoluminescence 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Acousto-optic deflector」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.