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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 Gires–Tournois etalon ： ウィキペディア英語版 Gires–Tournois etalon In optics, a Gires–Tournois etalon is a transparent plate with two reflecting surfaces, one of which has very high reflectivity. Due to multiple-beam interference, light incident on a Gires–Tournois etalon is (almost) completely reflected, but has an effective phase shift that depends strongly on the wavelength of the light. The complex amplitude reflectivity of a Gires–Tournois etalon is given by :$r=-\backslash frac\}$ where ''r''1 is the complex amplitude reflectivity of the first surface, :$\backslash delta=\backslash frac\; n\; t\; \backslash cos\; \backslash theta\_t$ :''n'' is the index of refraction of the plate :''t'' is the thickness of the plate :''θt'' is the angle of refraction the light makes within the plate, and :''λ'' is the wavelength of the light in vacuum. == Nonlinear effective phase shift == Suppose that $r\_1$ is real. Then $|r|\; =\; 1$, independent of $\backslash delta$. This indicates that all the incident energy is reflected and intensity is uniform. However, the multiple reflection causes a nonlinear phase shift $\backslash Phi$. To show this effect, we assume $r\_1$ is real and $r\_1=\backslash sqrt$, where $R$ is the intensity reflectivity of the first surface. Define the effective phase shift $\backslash Phi$ through :$r=e^.$ One obtains :$\backslash tan\backslash left(\backslash frac\backslash right)=-\backslash frac\}\backslash tan\backslash left(\backslash frac\backslash right)$ For ''R'' = 0, no reflection from the first surface and the resultant nonlinear phase shift is equal to the round-trip phase change ($\backslash Phi\; =\; \backslash delta$) – linear response. However, as can be seen, when ''R'' is increased, the nonlinear phase shift $\backslash Phi$ gives the nonlinear response to $\backslash delta$ and shows step-like behavior. Gires–Tournois etalon has applications for laser pulse compression and nonlinear Michelson interferometer. Gires–Tournois etalons are closely related to Fabry–Pérot etalons. 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「Gires–Tournois etalon」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.