Abstract 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.
Received: 18 November 2005
Revised: 24 July 2006
Accepted manuscript online:
(Other nonlinear optical materials; photorefractive and semiconductor materials)
Fund: 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).
Cite this article:
Wang Chun-Hua(王春花), Liu Li-Ren(刘立人), Yan Ai-Min(闫爱民), Zhou Yu(周煜), Liu De-An(刘德安), and Hu Zhi-Juan(胡志娟) Diffraction of an ultrashort pulsed beam with arbitrary polarization state from a volume holographic grating in LiNbO3 crystals 2007 Chinese Physics 16 100
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