Photoanisotropic Red Light Sensitive Dye - Polymer Systems

Natalia Tomova; Ludmila Nikolova; Violeta Dragostinova; Todor Todorov

doi:10.1117/12.963824

12 April 1990 Photoanisotropic Red Light Sensitive Dye - Polymer Systems

Natalia Tomova, Ludmila Nikolova, Violeta Dragostinova, Todor Todorov

Proceedings Volume 1183, Holography '89; (1990) https://doi.org/10.1117/12.963824
Event: Holography '89, 1989, Varna, Bulgaria

Abstract

Disazobenzols are dyes of the type: Y X-cc:-N=N a N=N 0 Z Like in monoazobenzols, their molecules exist both in trans- and cis-forms, irradiation with light in the transabsorption band causing transcisisomerization. This changes the absorption spectrum (hence, the refractive index) of the samples, and therefore, such systems can be used for optical recording. Normally, the transabsorption band of these dyes is in the longer wavelengths than that of monoazodyes. The aim of our investigation was to produce a rigid solution of a dye in a polymer, suitable for optical recording in the red region. Most suitable among the great number of investigated dyes proved to be:

Citation Download Citation

Natalia Tomova, Ludmila Nikolova, Violeta Dragostinova, and Todor Todorov "Photoanisotropic Red Light Sensitive Dye - Polymer Systems", Proc. SPIE 1183, Holography '89, (12 April 1990); https://doi.org/10.1117/12.963824

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