Abstract

Dichromated gelatin films present sensitivity to red light without any special sensitization. This sensitivity is due to an absorption appearing in dichromated gelatin films and attributed mainly to a charge–transfer transition which results in an electron transfer from gelatin to chromium. To characterize holographically this recording material, both reflection and transmission gratings have been obtained using the 632.8-nm radiation from a He–Ne laser.

© 1985 Optical Society of America

Hologram formation with red light in methylene blue sensitized dichromated gelatin

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