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Proceedings Paper

High-sensitivity adaptive vibration measurements with nonsteady-state photo-EMF-based photodetectors
Author(s): Nikolai A. Korneev; Ponciano Rodriguez-Montero; B. Sanchez; Serguei I. Stepanov; Igor A. Sokolov
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Paper Abstract

We present results of detailed experimental study of threshold sensitivity of GaAs adaptive photodetector at 632.8 nm. The minimal experimentally detected sinusoidal phase modulation was approximately equals 1.6 X 10-6 rad(root)mW/Hz that approached the theoretical limit for these devices (approximately equals 2 X 10-7 rad(root)mW/Hz) and allowed detection of approximately equals 1.6 X 10-7 micrometers vibration amplitudes with 1 mW laser power in 1 Hz bandwidth.

Paper Details

Date Published: 4 October 1994
PDF: 9 pages
Proc. SPIE 2264, Vibration Monitoring and Control, (4 October 1994); doi: 10.1117/12.188873
Show Author Affiliations
Nikolai A. Korneev, National Institute for Astrophysics, Optics and Electronics (Mexico)
Ponciano Rodriguez-Montero, National Institute for Astrophysics, Optics and Electronics (Mexico)
B. Sanchez, National Institute for Astrophysics, Optics and Electronics (Mexico)
Serguei I. Stepanov, National Institute for Astrophysics, Optics and Electronics (Mexico)
Igor A. Sokolov, A.F. Ioffe Physical Technical Institute (Russia)


Published in SPIE Proceedings Vol. 2264:
Vibration Monitoring and Control
Colin G. Gordon, Editor(s)

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