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/mu m) "off" state. Grating spacings between 1.7 and 30 mu m are obtained in a 10 mu m thick cell by variation of the concentration of chiral dopant used to form the cholesteric liquid crystal. (C) 1998 American Institute of Physics.
Applied Physics Letters
Copyright 1998 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 72, 885 (1998) and may be found at http://dx.doi.org/10.1063/1.120925.
Lee, S. N.; Chien, Liang-Chy; Sprunt, Samuel N. (1998). Polymer-Stabilized Diffraction Gratings from Cholesteric Liquid Crystals. Applied Physics Letters 72(8) 885-887. Retrieved from https://oaks.kent.edu/cpippubs/37