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Proceedings Paper

Comparative investigations on dynamic characteristics of optically addressed liquid crystal spatial light modulators with photosensitive layers based on polyimide doped with dyes and fullerenes
Author(s): Natalia V. Kamanina; Nikolai M. Kozhevnikov; Natalie A. Vasilenko
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Paper Abstract

Among liquid crystal spatial light modulators (LC-SLMs), LC- SLM with the photosensitive layer based on polyimide is of the highest resolution and of the highest sensitivity. In the present paper resolution, sensitivity, and speed of LC- SLM with polyimide doped with fullerene (FDPI) have been investigated in comparison with those of LC-SLM with dye doped polyimide (DDPI). For the study the holographic technique has been applied using the second harmonic of a pulsed Nd-laser under condition of Raman-Nath diffraction. LC-SLMs with fullerene-doped polyimide has been found to show the highest sensitivity, which has been 10 times higher than that for other LC-SLMs. The effect has been due to a creation of additional donor-acceptor complexes in polyimide doped with fullerene. Diffraction efficiency of LC-SLM with FDPI is less than the one of LC-SLM with DDPI. This fact is related to faster relaxation of holographic grating in FDPI.

Paper Details

Date Published: 1 June 1999
PDF: 7 pages
Proc. SPIE 3633, Diffractive and Holographic Technologies, Systems, and Spatial Light Modulators VI, (1 June 1999); doi: 10.1117/12.349315
Show Author Affiliations
Natalia V. Kamanina, S.I. Vavilov State Optical Institute (Russia)
Nikolai M. Kozhevnikov, St. Petersburg State Technical Univ. (Russia)
Natalie A. Vasilenko, Karpov Institute of Physical Chemistry (Russia)


Published in SPIE Proceedings Vol. 3633:
Diffractive and Holographic Technologies, Systems, and Spatial Light Modulators VI
Ivan Cindrich; Sing H. Lee; Richard L. Sutherland, Editor(s)

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