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Applied Optics

Applied Optics


  • Vol. 38, Iss. 35 — Dec. 11, 1999
  • pp: 7214–7221

Dark self-enhancement in dichromated poly(vinyl alcohol) gratings: a detailed study

Tuula Keinonen and Roma Grzymala  »View Author Affiliations

Applied Optics, Vol. 38, Issue 35, pp. 7214-7221 (1999)

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Experimental results concerning the real-time hologram recording process in dichromated poly(vinyl alcohol) are presented. Self-enhancement, the increase in diffraction efficiency of the holographic gratings in the dark after recording, is also presented. The influence of the recording parameters (pH, exposure energy, dichromate concentration) on the self-enhancement gain is shown. Maximum gain was 6, and self-enhancement occurred during the 3 days following the exposure. The results and a model for the reduction of chromium ions corresponding to the formation of the grating are discussed.

© 1999 Optical Society of America

OCIS Codes
(090.0090) Holography : Holography
(090.2900) Holography : Optical storage materials
(160.0160) Materials : Materials
(160.4670) Materials : Optical materials

Original Manuscript: March 25, 1999
Revised Manuscript: July 26, 1999
Published: December 10, 1999

Tuula Keinonen and Roma Grzymala, "Dark self-enhancement in dichromated poly(vinyl alcohol) gratings: a detailed study," Appl. Opt. 38, 7214-7221 (1999)

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