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Proceedings Paper

Checking the refractive index change in liquid photopolymerizable compositions
Author(s): Alexander V. Volkov; Nikolay L. Kazanskiy; Vladimir S. Solovjev
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Paper Abstract

There is a technique for generating structures for continuous-profile diffractive optical elements (DOEs) using liquid photopolymerizable compositions (LPPC). Having in view obtaining a maximal microrelief height at a desired photomask contrast the energy exposure needs to ensure the maximal difference between the mass ratios of the exposure- generated polymer to the original oligomer (conversion) in the exposed and unexposed zones. Due to the fact that the refractive index of the polymer is higher than that of its own oligomer the refractive index will obviously be greater in places of higher conversion levels. Therefore, by fixing the difference between the refractive indexes in exposed and unexposed zones one can determine the microrelief height obtained as the result of dark growth.

Paper Details

Date Published: 5 February 2002
PDF: 6 pages
Proc. SPIE 4680, Second International Conference on Lasers for Measurement and Information Transfer, (5 February 2002); doi: 10.1117/12.454679
Show Author Affiliations
Alexander V. Volkov, Image Processing Systems Institute (Russia)
Nikolay L. Kazanskiy, Image Processing Systems Institute (Russia)
Vladimir S. Solovjev, Image Processing Systems Institute (Russia)

Published in SPIE Proceedings Vol. 4680:
Second International Conference on Lasers for Measurement and Information Transfer
Vadim E. Privalov, Editor(s)

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