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Proceedings Paper

Liquid crystal photorefractivity for reordering holographic gratings
Author(s): Iam-Choon Khoo
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Paper Abstract

We present a detailed discussion of the fundamental mechanisms for recently observed persistent photorefractive effects in nematic liquid crystal films. A theoretical analysis of the various space charge fields, dielectric torques, and estimates of their magnitudes and critical assessment of their roles in the observed holographic grating formation process are presented. In dye- or Fullerene C60-doped films, it is observed that the induced director axis and refractive index grating could persist indefinitely. Furthermore, these stored gratings can be electrically switched on and off at ms-subms speed.

Paper Details

Date Published: 11 March 1996
PDF: 11 pages
Proc. SPIE 2651, Liquid Crystal Materials, Devices, and Applications IV, (11 March 1996); doi: 10.1117/12.235363
Show Author Affiliations
Iam-Choon Khoo, The Pennsylvania State Univ. (United States)

Published in SPIE Proceedings Vol. 2651:
Liquid Crystal Materials, Devices, and Applications IV
Ranganathan Shashidhar, Editor(s)

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