HETERODYNE-DETECTION OF WEAK OPTICAL WAVE-FRONTS BURIED IN A PHOTOREFRACTIVE FANNING NOISE

被引：7

作者：

BREUGNOT, S ^{[1
]}

DEFOUR, M ^{[1
]}

RAJBENBACH, H ^{[1
]}

HUIGNARD, JP ^{[1
]}

机构：

[1] THOMSON CSF, CENT RECH LAB, F-91404 ORSAY, FRANCE

来源：

OPTICS COMMUNICATIONS | 1993年 / 104卷 / 1-3期

关键词：

D O I：

10.1016/0030-4018(93)90117-N

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Weak signals, initially burried in the beam fanning noise of photorefractive amplifiers can be efficiently detected by combining the temporal filtering properties of coherent receivers with a spatial averaging over the random noise distribution that occurs from photorefractive effects. This is demonstrated by modulating in time the signal or the pump beam. Theoretical and experimental investigations using photorefractive BaTiO3 in four different configurations are reported and compared.

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页码：118 / 122

页数：5

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