Noise Reduction in Photorefractive Image Amplification by Contradirectional rnTwo-Wave Mixing in Rh-Doped BaTiOa Crystal

XU Xin-Guang; MU Xiao-Dong; SHAO Zong-Shu; DU Chen-Lin; JIANG Min-Hua; LUO Hao-Su; XU Hai-Qing

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Noise Reduction in Photorefractive Image Amplification by Contradirectional rnTwo-Wave Mixing in Rh-Doped BaTiOa Crystal

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Low noise image amplification owing to contradirectional two-wave mixing (CTWM) is proposed and demonrnstrafed in Rh-doped BaTiOa crystal. Comparing with the conventional forward two-wave mixing scheme, an rnenhancement of signal-to-noise ratio in the order of 103 is obtained. The theoretical analyses are presented and rngive a reasonable explanation for the experimental results. The further discussion shows that CTWM scheme rncan also reduce the influence of the crystal absorption and crystal size on the two-wave mixing process to rise the rnsignal beam gain.

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《中国物理快报：英文版》 |2000年第7期|507-509|共3页
作者
XU Xin-Guang; MU Xiao-Dong; SHAO Zong-Shu; DU Chen-Lin; JIANG Min-Hua; LUO Hao-Su; XU Hai-Qing;
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State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100;

State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100;

State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100;

State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100;

State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100;

Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800;

Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800;

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Noise Reduction in Photorefractive Image Amplification by Contradirectional rnTwo-Wave Mixing in Rh-Doped BaTiOa Crystal

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