Interferometric detection of ultrasound at rough surfaces using optical phase conjugation

Paul, M.; Betz, B.; Arnold, W.
June 1987
Applied Physics Letters;6/1/1987, Vol. 50 Issue 22, p1569
Academic Journal
Optical detection of ultrasonic signals of 7.5 MHz center frequency has been carried out by heterodyne interferometry at the rough surface of an aluminum sample. The distorted wave front was reconstructed by optical phase conjugation leading to an increase of the light-gathering power of the interferometer.


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