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Applied Optics

Applied Optics


  • Vol. 11, Iss. 4 — Apr. 1, 1972
  • pp: 818–822

Random Phase Shifters for Fourier Transformed Holograms

Y. Takeda, Y. Oshida, and Y. Miyamura  »View Author Affiliations

Applied Optics, Vol. 11, Issue 4, pp. 818-822 (1972)

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The random phase shifter method for Fourier transformed holograms is discussed. It is shown that by adopting the random phase shifters of the phase quantization levels beyond 2 (4, for example), the effectiveness becomes about twice that of 2, and that the reduction of the effectiveness by the coincidence between a pattern of the information and a phase shifter can be withdrawn under the probability of 10−10. Hologram memories of information storage density of 105 bits/mm2 and 2.0 × 103 characters/mm2 are demonstrated.

© 1972 Optical Society of America

Original Manuscript: August 12, 1971
Published: April 1, 1972

Y. Takeda, Y. Oshida, and Y. Miyamura, "Random Phase Shifters for Fourier Transformed Holograms," Appl. Opt. 11, 818-822 (1972)

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  1. Y. Takeda et al., Proc. of Annual Meeting of Electronic and Communication Engineers of Japan, 777 (1971).
  2. C. B. Burckhardt, Appl. Opt. 9, 695 (1970). [CrossRef] [PubMed]
  3. F. Spitzer, Principles of Random Walk (Van Nostrand, Princeton, N.J., 1964). [CrossRef]
  4. E. D. Cashwell, C. J. Everett, Monte Carlo Method (Pergamon Press, London, 1959).
  5. Y. Takeda et al., Oyo Butsuri 40, 41 (1971).
  6. L. H. Lin, Appl. Opt. 8, 863 (1969). [CrossRef]

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