Temporal Versus Spatial Carrier Techniques For Heterodyne Interferometery

Mitsuo Takeda

doi:10.1117/12.967284

1 January 1987 Temporal Versus Spatial Carrier Techniques For Heterodyne Interferometery

Mitsuo Takeda

Proceedings Volume 0813, Optics and the Information Age; (1987) https://doi.org/10.1117/12.967284
Event: 14th Congress of the International Commission for Optics, 1987, Quebec, Canada

Abstract

Two different types of interferograms and their analysis techniques are being used in precision interferometry. The heterodyne interferometry proposed by Massie et al.1) uses a time-varying interferogram i(x,y;t) with a temporal carrier frequency fa generated by an acousto-optic modulator; g(x,y;t) = a(x,y) + b(x,y)cos(2,rfet +0(x,y)]. (1)

Citation Download Citation

Mitsuo Takeda "Temporal Versus Spatial Carrier Techniques For Heterodyne Interferometery", Proc. SPIE 0813, Optics and the Information Age, (1 January 1987); https://doi.org/10.1117/12.967284

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