Wavefront Curvature Sensing Based on Diffraction Grating and Fractional Fourier Transforms期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Wavefront Curvature Sensing Based on Diffraction Grating and Fractional Fourier Transforms

Authors:	Banghe?Zhu author-information" > author-information__contact u-icon-before" > mailto:zhu@ils.uec.ac.jp" title=" zhu@ils.uec.ac.jp" itemprop=" email" data-track=" click" data-track-action=" Email author" data-track-label=" " >Email author,Akira?Shirakawa,Mitsuru?Musha,Ken-ichi?Ueda,Kevin?D.?Cole

Affiliation:	(1) Institute for Laser Science, University of Electro-communications, 1–5–1 Choufugaoka, Chofu, Tokyo 182-8585, Japan;(2) Dept. of Mechanical Engineering, N104 Walter Scott Engineering Center, University of Nebraska-Lincoln, Lincoln, NE, 68588-0656, U.S.A.

Abstract:	We propose a new concept for wavefront curvature sensing, which is based on diffraction grating and fractional Fourier transforms systems. An explicit formula is derived expressing the wavefront curvature, and the wavefront shape can also be retrieved rapidly. The experimental setup is presented and numerical simulations show the validity of the proposed method.

Keywords:	adaptive optics diffraction and gratings optical sensing fractional Fourier transforms
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