Optical amplification of the laser-ultrasonic signal

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DOIResolve DOI: http://doi.org/10.1063/1.1711634
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Proceedings titleQuantitative Nondestructive Evaluation
Series titleAIP Conference Proceedings; no. 700
ConferenceReview of Progress in Quantitative Nondestructive Evaluation - QNDE 2003, July 27-August 3, 2003, Green Bay, Wisconsin, USA
Pages270277; # of pages: 8
AbstractOptical amplification of the detection laser light seems an elegant method to improve the sensitivity of a system for the optical detection of ultrasound. However, the amplified spontaneous emission associated to the optical amplification process is a source of both phase and intensity noises. Two configurations are possible, one with the amplifier located ahead of the inspected surface (preamplification) and one after (post-amplification). We discuss the advantages and drawbacks of these two schemes when a photorefractive two-wave mixing demodulator is used.
Publication date
AffiliationNRC Industrial Materials Institute; National Research Council Canada
Peer reviewedYes
NRC number46374
NPARC number18487249
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Record identifier90def084-a130-4dde-afe2-0491a3c9ebc1
Record created2011-08-23
Record modified2016-05-09
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