Spatio-temporal heterodyne interferometry and generation of virtual wavefronts by space-time degeneracy

Mitsuo Takeda

doi:10.1117/12.195906

12 December 1994 Spatio-temporal heterodyne interferometry and generation of virtual wavefronts by space-time degeneracy

Mitsuo Takeda

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Proceedings Volume 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements; (1994) https://doi.org/10.1117/12.195906
Event: International Conference on Interferometry '94, 1994, Warsaw, Poland

Abstract

The paper reviews our recent studies on spatio-temporal heterodyne interferometry. The technique employs both spatial and temporal carrier frequencies to make highly efficient use of the limited spatio-temporal frequency bandwidth available for the fringe detection system. A new concept of a virtual wavefront is introduced, and the generation and detection of the virtual wavefront by a space-time degenerate scan-synchronized wavelength-shift interferometer are proposed and demonstrated by experiments.

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Mitsuo Takeda "Spatio-temporal heterodyne interferometry and generation of virtual wavefronts by space-time degeneracy", Proc. SPIE 2340, Interferometry '94: New Techniques and Analysis in Optical Measurements, (12 December 1994); https://doi.org/10.1117/12.195906

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KEYWORDS

Interferometers

Wavefronts

Interferometry

Fourier transforms

Semiconductor lasers

Heterodyning

Mirrors

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