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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 14, Iss. 3 — Mar. 1, 1975
  • pp: 660–665

Speckle Noise Reduction by Random Phase Shifters

Masaru Matsumura  »View Author Affiliations


Applied Optics, Vol. 14, Issue 3, pp. 660-665 (1975)
http://dx.doi.org/10.1364/AO.14.000660


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Abstract

Experimental results are given that show that a random phase shifter (RPS) is effective in reducing speckle noise caused by optical defects in coherent imaging systems, including holographic imaging systems. Here the RPS is composed of many tiny transparent blocks, each of which gives a definite phase shift such as O or π to the transmitting light; and the distribution of the phase shift is two-dimensionally random. The optical defects are scattering centers such as scratches or dust on lenses or on the hologram medium in the case of holographic imaging systems.

© 1975 Optical Society of America

History
Original Manuscript: June 10, 1974
Published: March 1, 1975

Citation
Masaru Matsumura, "Speckle Noise Reduction by Random Phase Shifters," Appl. Opt. 14, 660-665 (1975)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-14-3-660

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