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Journal articles
Experimental investigation of a photorefractive ring phase modulation amplifier
Abstract : We present the experimental investigation of a photorefractive ring phase modulation amplifier, that is not resonant and that can work with distorted beams. We show that with this geometry an amplification by a factor 5 of a phase modulation signal is possible. We also show that this strong amplification is alleviated by the presence of losses in the ring. These losses lead to a real gain in signal to noise ratio of a factor 3, that nevertheless expresses that with such a system the photon noise limit of laser ultrasonics system can be overpassed. The losses are also responsible for the strong sensitivity of the system to the vibrations, which puts a strong limitation of the ring amplifier
Cited literature [8 references]
https://hal-iogs.archives-ouvertes.fr/hal-00677543
Contributor : Marie-Laure Edwards <>
Submitted on : Friday, March 30, 2012 - 2:08:05 PM
Last modification on : Wednesday, September 16, 2020 - 5:42:54 PM
Long-term archiving on: : Wednesday, December 14, 2016 - 6:52:20 PM
Contributor : Marie-Laure Edwards <>
Submitted on : Friday, March 30, 2012 - 2:08:05 PM
Last modification on : Wednesday, September 16, 2020 - 5:42:54 PM
Long-term archiving on: : Wednesday, December 14, 2016 - 6:52:20 PM
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PhD1-27Auteur.pdf
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