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Proceedings Paper

New concept for laser measurement of angular vibrations
Author(s): Andrew C. Lewin; Volkmar Roth; Georg Siegmund; Martin Johansmann
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Paper Abstract

With the new approach described here, the two tangential velocity components needed are acquired separately using the principle of optical heterodyne interferometry, and combined to provide rotational information after having been converted into electrical signals. Due to the heterodyning with the unshifted reference beam, this provides an optical amplification of each measurement beam, and thus significantly increases the optical sensitivity of the system.

Paper Details

Date Published: 13 February 1996
PDF: 13 pages
Proc. SPIE 2729, Optical Velocimetry, (13 February 1996); doi: 10.1117/12.233011
Show Author Affiliations
Andrew C. Lewin, Polytec GmbH (Germany)
Volkmar Roth, Polytec GmbH (Germany)
Georg Siegmund, Polytec GmbH (Germany)
Martin Johansmann, Polytec GmbH (Germany)


Published in SPIE Proceedings Vol. 2729:
Optical Velocimetry
Maksymilian Pluta; Jan Karol Jabczynski; Mariusz Szyjer, Editor(s)

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