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  4. Interferometric detection of ultrasound at rough surfaces using optical phase conjugation
 
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1988
Conference Paper
Title

Interferometric detection of ultrasound at rough surfaces using optical phase conjugation

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 aluminum sample. The distorted wave-front was reconstructed by optical phase-conjugation leading to an increase of the light-gathering power of the interferometer.
Author(s)
Betz, B.
Arnold, W.
Paul, M.
Mainwork
Photoacoustic and Photothermal Phenomena 1987  
Conference
International Topical Meeting on Photoacoustic and Photothermal Phenomena 1987  
Language
English
Fraunhofer-Institut für Zerstörungsfreie Prüfverfahren IZFP  
Keyword(s)
  • Interferometrie

  • nichtlineare Optik

  • optische Phasenkonjugation

  • rauhe Oberfläche

  • Ultraschall

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