Effect of recording conditions on the anisotropic diffraction of volume holographic gratings |
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Authors: | Xin Wang, Aimin Yan, De an Liu, Liren Liu,Zhijuan Hu |
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Affiliation: | aShanghai Institute of Optics and Fine Mechanics, Chinese Academy of Science, P.O. Box 800-211, Shanghai 201800, PR China |
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Abstract: | The anisotropic Bragg diffraction of the volume holographic gratings in photorefractive crystals are investigated based on the model of anisotropic coupled-wave theory. The effect of the initial intensity ratio and the recording angles of the two recording waves on the anisotropic Bragg diffraction properties is discussed. It is shown that both the ratio of the initial intensity and the incident angles of the recording waves are selective action for the anisotropic Bragg diffraction efficiency of the volume holographic gratings, while these two recording conditions are not selective action for the isotropic Bragg diffraction. Furthermore, the Bragg phase matching condition of anisotropic diffraction is analyzed when the recording angles change. |
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Keywords: | Volume holographic gratings Anisotropic diffraction Diffraction efficiency |
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