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Proceedings Paper

Optical recording material based on bacteriorhodopsin modified with hydroxylamine
Author(s): Nicolai N. Vsevolodov; Tatyana V. Dyukova; Anna B. Druzhko; V. Yu. Shakhbazyan
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Paper Abstract

Photochromic films with a natural protein bacteriorhodopsin as a light-sensitive material have been known. Information storage in such films is no more than one minute. We have developed films in which photodecomposition of the protein-chromophore complex takes place during photoinduced hydroxylaminolysis. The spectral product is retinaloxime with the absorption band maximum at 380 nm. The irreversibility of retinaloxime formation permits this process to be used for production of memory systems based on the write-once optical records with storage times of more than one year. The diffraction efficiency in these films reached 0.2 - 0.3%, the lifetime of grating being equal to several days. The photosensitivity depended on the history of the sample. The films permit simultaneous recording and readout of both dynamic and so-called `semiconstant' holograms in the same region of the sample.

Paper Details

Date Published: 1 November 1991
PDF: 10 pages
Proc. SPIE 1621, Optical Memory and Neural Networks, (1 November 1991); doi: 10.1117/12.50410
Show Author Affiliations
Nicolai N. Vsevolodov, Institute of Theoretical and Experimental Biophysics (Russia)
Tatyana V. Dyukova, Institute of Theoretical and Experimental Biophysics (Russia)
Anna B. Druzhko, Institute of Theoretical and Experimental Biophysics (Russia)
V. Yu. Shakhbazyan, Institute of Theoretical and Experimental Biophysics (Russia)


Published in SPIE Proceedings Vol. 1621:
Optical Memory and Neural Networks

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