Dynamic charge-carrier-mobility-mediated holography in thin layers of photoconducting polymers

The dynamic holography technique is proposed for the measurement of the charge-carrier-mobility in thin layers of a photoconducting polymer, used in optically addressed liquid-crystal spatial light modulators. The photorefractive properties of these modulators are studied under short-pulse (20 ps, 5...

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Bibliographic Details
Published in:Applied physics letters 2002-11, Vol.81 (20), p.3705-3707
Main Authors: Bartkiewicz, S., Miniewicz, A., Sahraoui, B., Kajzar, F.
Format: Article
Language:English
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Summary:The dynamic holography technique is proposed for the measurement of the charge-carrier-mobility in thin layers of a photoconducting polymer, used in optically addressed liquid-crystal spatial light modulators. The photorefractive properties of these modulators are studied under short-pulse (20 ps, 532 nm) laser illumination conditions and the charge mobility in the photoconducting polymer (μh=10−7 cm2/V s) is obtained from the temporal evolution of intensity of the first-order diffracted beam. A mechanism responsible for the grating formation is proposed and discussed.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.1512824