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Conferences > CLEO > 1995 > CMF > CMF3
  • Conference on Lasers and Electro-Optics
  • OSA Technical Digest (Optica Publishing Group, 1995),
  • paper CMF3

Low-noise photorefractive amplification and the detection of weak signals

S. Breugnot, M. Defour, H. Rajhenbach, and J.P. Huignard

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Abstract

When an optical amplifier is injected with a very weak optical wave front, its output is generally corrupted by a strong background noise that limits the minimum signal to be amplified in the detection plane. In photorefractive amplifiers, the beam fanning arises from a two-beam coupling process between the pump beam and its scattered light at the interfaces or in the bulk of the crystal.1

© 1995 Optical Society of America

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