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Applied Optics

Applied 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)

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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

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

Yoshihiro Ohtsuka and Yoh Imai, "Laser heterodyne correlation processing of optical thickness irregularities in transparencies," Appl. Opt. 17, 3402-3407 (1978)

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  1. See, for example, M. Born, E. Wolf, Principles of Optics (Pergamon, New York, 1964), pp. 286–288.
  2. See, for example, J. C. Dainty, in Progress in Optics, E. Wolf, Ed. (North-Holland, Amsterdam, 1976), Vol. 14, pp. 1–46. [CrossRef]
  3. Y. Ohtsuka, I. Sasaki, Appl. Phys. 3, 15 (1974). [CrossRef]
  4. Y. Ohtsuka, I. Sasaki, Appl. Phys. 7, 265 (1975). [CrossRef]
  5. Y. Ohtsuka, in Recent Advances in Optical Physics, Proceedings of the ICO-10, Prague-1975, B. Havelka, J. Blabla, Eds. (Placky U., Prague, 1976).
  6. H. Arsenlault, S. Lowenthal, Opt. Commun. 1, 451 (1970). [CrossRef]
  7. T. Asakura, H. Fujii, K. Murata, Opt. Acta 19, 273 (1972). [CrossRef]

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