Polymer-stabilized diffraction gratings from cholesteric liquid crystals
- 23 February 1998
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 72 (8) , 885-887
- https://doi.org/10.1063/1.120925
Abstract
We report the use of a low concentration polymer network to stabilize electric field-induced diffraction gratings in cholesteric liquid crystals. The stabilized gratings can be electrically switched between a zero-field “on” state, which exhibits approximately 75% diffraction efficiency, and a moderate field (typically 3 V/μm) “off” state. Grating spacings between 1.7 and 30 μm are obtained in a 10 μm thick cell by variation of the concentration of chiral dopant used to form the cholesteric liquid crystal.Keywords
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