Open AccessA new kind of laser microphone using high sensitivity pulsed laser vibrometer
Author(s) -
Chen-Chia Wang,
Sudhir Trivedi,
Feng Jin,
V. Swaminathan,
Narasimha S. Prasad
Publication year - 2008
Publication title -
conference on lasers and electro-optics
Language(s) - English
Resource type - Conference proceedings
DOI - 10.1109/cleo.2008.4552064
Subject(s) - laser doppler vibrometer , microphone , laser , materials science , sensitivity (control systems) , optics , laser scanning vibrometry , electromotive force , acoustics , laser beams , physics , electrical engineering , engineering , electronic engineering , sound pressure
We demonstrate experimentally a new kind of laser microphone using a highly sensitive pulsed laser vibrometer. By using the photo-electromotive-force (photo-EMF) sensors, we present data indicating the real-time detection of surface displacements as small as 4 pm.
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