Measurement of thermal expansion by statistical interferometry

H. Kadono

doi:10.1117/12.2316248

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1 September 1996 Measurement of thermal expansion by statistical interferometry

H. Kadono

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Proceedings Volume 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology; 2778FJ (1996) https://doi.org/10.1117/12.2316248
Event: 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 1996, Taejon, Korea, Republic of

Abstract

Generally, in conventional optical interferometry, generation of speckles has been regarded as a noise and an error source degrading the reliability of the measurement because the phase is determined in a completely deterministic way. Recently, we have proposed and developed a new interferometric technique called statistical interferometry and demonstrated its validity^1,2). In the method, completely random wave fronts, i.e. speckle fields, play a role of the standard of phase in a statistical sense. In the present study, we have applied the statistical interferometry to the measurement of thermal expansion of an object.

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H. Kadono "Measurement of thermal expansion by statistical interferometry", Proc. SPIE 2778, 17th Congress of the International Commission for Optics: Optics for Science and New Technology, 2778FJ (1 September 1996); https://doi.org/10.1117/12.2316248

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