Diffraction of an ultrashort pulsed beam with arbitrary polarization state from a volume holographic grating in LiNbO3 crystals
Diffraction of an ultrashort pulsed beam with arbitrary polarization state from a volume holographic grating in LiNbO3 crystals作者机构：Information Laboratory Shanghai Institute of Optics and Fine Mechanics Chinese Academy of Sciences Shanghai 201800 China
出 版 物：《Chinese Physics B》 (中国物理B（英文版）)
年 卷 期：2007年第16卷第1期
页 面：100-105页
核心收录：
基 金：Project supported by the State Key Development Program for Basic Research of China (Grant No 2002CCA03500) and the National Natural Science Foundation of China (Grant No 60177016)
主 题：diffraction optics coupled wave theory volume holographic grating ultrashort pulsed beam
摘 要：Based on a modified coupled wave theory of Kogelnik, we have studied the diffraction of an ultrashort pulsed beam with an arbitrary polarization state from a volume holographic grating in photorefractive LiNbO3 crystals. The results indicate that the diffracted intensity distributions in the spectral and temporal domains and the diffraction efficiency of the grating are both changed by the polarization state and spectral bandwidth of the input pulsed beam. A method is given of choosing the grating parameters and input conditions to obtain a large variation range of the spectral bandwidth of the diffracted pulsed beam with an appropriate diffraction efficiency. Our study presents a possibility of using a volume holographic grating recorded in anisotropic materials to shape a broadband ultrashort pulsed beam by modulating its polarization state.
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