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期刊论文

Low-noise and high-gain image amplification by contradirectional two-wave mixing

许心光Xiaodong Mua) Xinguang Xu Zongshu Shao and Minhua Jiang Haosu Luo

APPLIED PHYSICS LETTERS VILUME 77, NUMBER 3 17 JULY 2000,-0001,():

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摘要/描述

Contradirectional two-wave mixing (CTWM) is demonstrated to be a perfect configuration for low-noise and high-gain image amplification. Compared with the image amplified by the forward two-wave mixing configuration, the signal-to-noise ratio is increased from 6 to 23104 in the experiments in Rh-doped BaTiO3 crystal. The gain of the signal beam is also enhanced effectively. We have contrasted the differences between the two experimental configurations and gave a credible explanation for the low noise and high gain that exists in the CTWM configuration.

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