Title :
Compensated photorefractive phase demodulator for probing object in rapid motion
Author :
Blouin, Arnaud ; Padioleau, C. ; Drolet, D. ; Monchalin, J.-P.
Author_Institution :
Ind. Mater. Inst., Nat. Res. Council Canada, Boucherville, Que., Canada
Abstract :
Summary from only given. Two-beam adaptive phase demodulators are used for noncontact and non-invasive measurements of the small surface displacements produced by ultrasonic waves propagating in an object. As an example the setup of a two-wave mixing-based photorefractive demodulator is shown.
Keywords :
Doppler measurement; acousto-optical devices; adaptive optics; demodulation; light scattering; multiwave mixing; optical beam splitters; optical polarisers; photodetectors; photorefractive materials; surface topography measurement; compensated photorefractive phase demodulator; light scattering; noncontact noninvasive measurements; probing laser; probing object; rapid motion; small surface displacement measurement; two-beam adaptive phase demodulators; two-wave mixing-based photorefractive demodulator; ultrasonic waves; Demodulation; Frequency; Laser beams; Laser excitation; Optical surface waves; Photorefractive effect; Photorefractive materials; Pump lasers; Rough surfaces; Surface roughness;
Conference_Titel :
Lasers and Electro-Optics, 2002. CLEO '02. Technical Digest. Summaries of Papers Presented at the
Conference_Location :
Long Beach, CA, USA
Print_ISBN :
1-55752-706-7
DOI :
10.1109/CLEO.2002.1033935
