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Performance evaluation of phase holograms recorded in methylene-blue-sensitized dichromated gelatin

Pappu, Sastry V and Changkakoti, Rupak (1990) Performance evaluation of phase holograms recorded in methylene-blue-sensitized dichromated gelatin. In: Photopolymer Device Physics, Chemistry, and Applications, 17-19 Jan. 1990, Los Angeles, CA, USA, pp. 39-46.

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Official URL: http://spiedigitallibrary.org/proceedings/resource...

Abstract

Systematic studies have been carried out on the performance evaluation of volume phase holograms recorded in methylene blue sensitized dichromated gelatin (DCG) to identify the conditions to be fulfilled to realize optimum diffraction efficiency in such holograms. Inexpensive nonstandard gelatin has been used. The studies have revealed the conditions under which optimum diffraction efficiency can be achieved. Further, it is found that the decrease in diffraction efficiency consequent upon the storage of holograms can be restored almost perfectly to the original level by reprocessing the holograms. It is proposed that DCG can be used fruitfully as a model information recording medium to investigate such aspects as senility, information loss and restoration, in the context of the development of optical memories.

Item Type: Conference Paper
Additional Information: Copyright of this article belongs to SPIE - The International Society for Optical Engineering.
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 23 Oct 2007
Last Modified: 24 Jan 2012 05:29
URI: http://eprints.iisc.ernet.in/id/eprint/11414

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