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Applied Optics

Applied Optics


  • Vol. 38, Iss. 35 — Dec. 11, 1999
  • pp: 7222–7227

Dark self-enhancement in dichromated-gelatin gratings: a detailed study

Roma Grzymala and Tuula Keinonen  »View Author Affiliations

Applied Optics, Vol. 38, Issue 35, pp. 7222-7227 (1999)

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Strong dark self-enhancement, the increase in diffraction efficiency after irradiation, has been reported previously for dichromated-gelatin gratings. Here a more-detailed study of this self-enhancement effect is presented. The self-enhancement in dichromated-gelatin gratings was of the order of 10–100, depending on the pH and on the dichromate concentration of the solution used for the preparation of dichromated-gelatin films. The highest self-enhancement gain occurred when pH was high and dichromate concentration was low. The increase in the diffraction efficiencies of the gratings continued over 3 months.

© 1999 Optical Society of America

OCIS Codes
(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

Roma Grzymala and Tuula Keinonen, "Dark self-enhancement in dichromated-gelatin gratings: a detailed study," Appl. Opt. 38, 7222-7227 (1999)

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