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Proceedings Paper

Organic materials for UV holographic and digital storage
Author(s): P. S. Ramanujam; B. Lohse; Rolf H. Berg
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Paper Abstract

We demonstrate the possibility of photodimerizable chromophores attached to a short alkyl chain as a potential medium for high capacity digital optical storage. A large increase in transmission from 4% to 70% is obtained in 20 s when irradiated with a 5 mW unfocused laser beam at 257 nm in a thin film of 1-(6-Bromohexyl)uracil. Through theoretical simulations, we show that the interaction cross-section is 6 10-18 cm2 at a photon dose of 9 1016 photons cm-2 s-1. We also investigate the formation of holographic diffraction grating in a film, obtaining an efficiency of 16%, mainly due to a surface relief grating.

Paper Details

Date Published: 9 June 2006
PDF: 7 pages
Proc. SPIE 6252, Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information, 62520V (9 June 2006); doi: 10.1117/12.677015
Show Author Affiliations
P. S. Ramanujam, Risø National Lab. (Denmark)
B. Lohse, Risø National Lab. (Denmark)
Rolf H. Berg, Risø National Lab. (Denmark)


Published in SPIE Proceedings Vol. 6252:
Holography 2005: International Conference on Holography, Optical Recording, and Processing of Information

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