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Showing papers on "Laser Doppler vibrometer published in 1968"


Journal ArticleDOI
TL;DR: In this article, a laser Doppler velocimeter is described in which the laser is employed not only as a light source, but also as a mixer-oscillator, in order to give a simpler optical system.
Abstract: A laser Doppler velocimeter is described in which the laser is employed not only as a light source, but also as a mixer-oscillator, in order to give a simpler optical system. The efficiency is comparable to that of a con-ventional system, such as a Michelson interferometer, and coherence requirements do not impose very severe restrictions. The frequency response of the system is also considered. Measurements of the coherence and frequency response of the system are also given.

176 citations


Journal ArticleDOI
TL;DR: An analysis is made of the spectrum of a laser beam modulated by the electrooptic doppler shift for two important cases: where the applied electric field is a sawtooth function and where it is a triangular function.
Abstract: An analysis is made of the spectrum of a laser beam modulated by the electrooptic doppler shift for two important cases: where the applied electric field is a sawtooth function and where it is a triangular function. The spectra reduce to simple forms when the maximum frequency shift is an integral multiple of the modulation frequency.

8 citations



Patent
20 Mar 1968

5 citations


Patent
14 Mar 1968

5 citations