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1987
Journal Article
Titel
Interferometric detection of ultrasound at rough surfaces using optical phase conjugation.
Alternative
Interferometrische Detektion von Ultraschall an rauhen Oberflächen mit Hilfe optischer Phasenkonjugation
Abstract
Optical detection of ultrasonic signals of 7.5 MHz center frequency has been carried out by heterodyne interferometry at the rough surface of an aluminium sample. The distored wave front was reconstructed by optical phase conjugation leading to an increase of the light-gathering power of the interferometer. (IZFP)