Abstract
Brillouin two-beam coupling has been used to achieve high gain1 as well as image intensification.2 Recently, the issue of noise, which accompanies the amplification, has been treated theoretically.3 We have carried out an experimental and theoretical study of the signal-to-noise ratio (SNR) for this amplifier, using CS2 as the Brillouin medium. This work was performed for two different cell lengths, 50 cm and 100 cm. Our theoretical analysis includes, possibly for the first time, a treatment of SNR in the pump depletion regime.
© 1991 Optical Society of America
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