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Two-dimensional Perturbative Analysis of Slant Grating in Photorefractive Crystals in an External Electric Field |
| JIANG Yong-yuan;FENG Yu-wen;ZHOU Zhong-xiang;LI Yan;SUN Xiu-dong;XU Ke-bin |
| Department of Applied Physics, Harbin Institute of Technology, Harbin 150001 |
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| Cite this article: |
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JIANG Yong-yuan, FENG Yu-wen, ZHOU Zhong-xiang et al 1998 Chin. Phys. Lett. 15 423-425 |
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Abstract A slant grating was recorded with two laser beams incident on photorefractive crystal in an external dc electric field. Two-dimensional perturbative analytical solution for the first two-order space-charge field for steady-state photorefractive slant grating recording has been obtained. It is shown that the inclusion of the longitudinal component of the space-charge field during photorefractive two-wave coupling can predict reduction of the fundamental harmonic and enhancement or reduction of the second-order harmonic for various applied field strength and various grating slant angles. The dependence of the first two-order harmonics on the slant angle and on the applied field strength is examined.
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| Keywords:
42.65.Hw
42.70.Nq
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Published: 01 June 1998
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| PACS: |
42.65.Hw
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(Phase conjugation; photorefractive and Kerr effects)
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42.70.Nq
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(Other nonlinear optical materials; photorefractive and semiconductor materials)
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