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Measurement of Photorefractive Two-Wave Coupling Exponential Gain Coefficient of LiNbO3 : Fe Crystal |
SUN Qian;LI Yu-dong;XU Jing-jun;LIU Si-min;ZHANG Guang-yin,ZHANG Xin-zheng;ZHANG Guo-quan |
Department of Physics, Nankai University, Tianjin 300071 |
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Cite this article: |
SUN Qian, LI Yu-dong, XU Jing-jun et al 1998 Chin. Phys. Lett. 15 348-350 |
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Abstract For a photorefractive crystal, the exponential gain coefficient of two-wave coupling,Г, is a constant. In this paper, the constant Г of a LiNbO3: Fe crystal is measured by using Gaussian beams and quasi-uniform beams. The difference between the results is attributed to the self-defocusing effect of the crystal.
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Keywords:
42.65.Ky
78.20.Ci
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Published: 01 May 1998
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PACS: |
42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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