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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 B Integral ： ウィキペディア英語版 B Integral In nonlinear optics, B-Integral is a measure of the nonlinear phase shift of light. It calculates the exponential growth of the least stable spatial frequency in a laser beam, and is the numerical equivalent of the nonlinear phase shift along the laser system's optical axis. In a multipass laser system as a cumulative measure of the nonlinear interaction, this integral is given by: : $B=\backslash frac\backslash int\; \backslash !\; n\_2I(z)\backslash ,dz\; \backslash ,$ where $I(z)$ is the optical intensity along the beam axis, $z$ the position in beam direction, and $n\_2$ the nonlinear index quantifying the Kerr nonlinearity. As $n\_2I(z)$ is the nonlinear change in the refractive index, one easily recognizes the B integral to be the total on-axis nonlinear phase shift accumulated in a passage through the device. The B integral is frequently used in the context of ultrafast amplifiers, e.g. for optical components such as the Pockels cell of a regenerative amplifier. ==See also== Kerr effect 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「B Integral」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.