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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 17, Iss. 21 — Nov. 1, 1978
  • pp: 3402–3407

Laser heterodyne correlation processing of optical thickness irregularities in transparencies

Yoshihiro Ohtsuka and Yoh Imai  »View Author Affiliations


Applied Optics, Vol. 17, Issue 21, pp. 3402-3407 (1978)
http://dx.doi.org/10.1364/AO.17.003402


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Abstract

Irregularities in optical thickness of a given nondiffuse transparency are statistically inferred using optical heterodyne detection techniques. The modulus and phase of its complex amplitude transmittance can be recovered from a beat photocurrent by rotating the transparency in a signal laser beam. The ensemble averaged autocorrelation of the transmittance is obtained by making correlation measurements of the recovered real and imaginary parts of the transmittance. This autocorrelation function has a nonvanishing imaginary part, so that the spatial spectral profile (i.e., its power spectrum) of the transparency becomes asymmetric.

© 1978 Optical Society of America

History
Original Manuscript: February 24, 1978
Published: November 1, 1978

Citation
Yoshihiro Ohtsuka and Yoh Imai, "Laser heterodyne correlation processing of optical thickness irregularities in transparencies," Appl. Opt. 17, 3402-3407 (1978)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-17-21-3402

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