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Proceedings Paper

Net coupling coefficient of two-wave mixing and its measurement in a photorefractive crystal
Author(s): Jinsong Liu; Jianqi Zhang; Xiaopeng Shao
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Paper Abstract

The main purpose of this paper is to distinguish the coupling coefficient from the net coupling coefficient in the two-wave mixing process. The coupling coefficient is dependent on the total intensity, whereas the net one is not. The larger the thermal emission rate or the weaker the total intensity is, the larger the difference between the two coupling coefficients will be. We present a method for measuring the net coupling coefficient and the saturation intensity in photorefractive material based on the detection of the gain of two-wave mixing at two total intensity levels. We investigate the temperature and the grating period dependence of the net coupling coefficient and the saturation intensity for Ce:Mn:LiNbO3 and Cr:GaAs crystal, respectively.

Paper Details

Date Published: 17 August 1998
PDF: 8 pages
Proc. SPIE 3554, Photorefractive Materials: Phenomena and Related Applications II, (17 August 1998); doi: 10.1117/12.318108
Show Author Affiliations
Jinsong Liu, Xidian Univ. (China)
Jianqi Zhang, Xidian Univ. (China)
Xiaopeng Shao, Xidian Univ. (China)


Published in SPIE Proceedings Vol. 3554:
Photorefractive Materials: Phenomena and Related Applications II
Peixian Ye; Tsutomu Shimura; Ratnakar R. Neurgaonkar, Editor(s)

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