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Applied Optics

Applied Optics


  • Vol. 24, Iss. 24 — Dec. 15, 1985
  • pp: 4460–4466

Holograms in dichromated gelatin: real-time effects

J. C. Newell, L. Solymar, and A. A. Ward  »View Author Affiliations

Applied Optics, Vol. 24, Issue 24, pp. 4460-4466 (1985)

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The dynamic properties of dichromated gelatin plates are investigated during exposure by illuminating them first by a single plane wave and second by two interfering plane waves produced from an argon-ion laser at 514.5 nm. The grating recorded is shown to be a pure absorption grating. The experimental results obtained for the output beam intensities as a function of time are compared with the predictions of a theoretical model, and reasonable agreement is found. It is further shown that owing to the effect of a humid atmosphere, the recorded grating may self-develop into a phase grating of much higher efficiency.

© 1985 Optical Society of America

Original Manuscript: July 8, 1985
Published: December 15, 1985

J. C. Newell, L. Solymar, and A. A. Ward, "Holograms in dichromated gelatin: real-time effects," Appl. Opt. 24, 4460-4466 (1985)

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  1. T. A. Shankoff, “Phase Holograms in Dichromated Gelatin,” Appl. Opt. 7, 2101 (1968). [CrossRef] [PubMed]
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  10. One could in general determine α0 and α1 by a Fourier expansion of α(x,y,t) in the y direction, but it is rather time-consuming to do so. We used instead an approximate method in which we work out the absorption coefficient only at the maxima [αmax(x,t)] and minima [αmin(x,t)] of the interference pattern and determine α0 and α1 from the relationships α0 = (αmax + αmin)/2 and α1 = (αmax − αmin)/2.
  11. B. J. Chang, C. D. Leonard, “Dichromated Gelatin for the Fabrication of Holographic Optical Elements,” Appl. Opt. 18, 2407 (1979). [CrossRef] [PubMed]
  12. R. R. A. Syms, L. Solymar, “Planar Volume Phase Holograms Formed in Bleached Photographic Emulsions,” Appl. Opt. 22, 1479 (1983). [CrossRef] [PubMed]

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