New concept for laser measurement of angular vibrations

Andrew C. Lewin; Volkmar Roth; Georg Siegmund; Martin Johansmann

doi:10.1117/12.233011

13 February 1996 New concept for laser measurement of angular vibrations

Andrew C. Lewin, Volkmar Roth, Georg Siegmund, Martin Johansmann

Proceedings Volume 2729, Optical Velocimetry; (1996) https://doi.org/10.1117/12.233011
Event: Optical Velocimetry, 1995, Warsaw, Poland

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.

Citation Download Citation

Andrew C. Lewin, Volkmar Roth, Georg Siegmund, and Martin Johansmann "New concept for laser measurement of angular vibrations", Proc. SPIE 2729, Optical Velocimetry, (13 February 1996); https://doi.org/10.1117/12.233011

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