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Article
Switchable Two-Dimensional Gratings Based on Field-Induced Layer Undulations in Cholesteric Liquid Crystals
Optics Letters (2005)
  • B. I. Senyuk, Kent State University - Kent Campus
  • I. I. Smalyukh
  • Oleg Lavrentovich, Kent State University
Abstract

We propose switchable two-dimensional (2D) diffractive gratings with periodic refractive-index modulation arising from layer undulations in cholesteric liquid crystals. The cholesteric cell can be switched between two states: (1) f lat layers of a planar cholesteric texture and (2) a square lattice of periodic director modulation associated with layer undulations that produces 2D diffraction patterns. The intensities of the diffraction maxima can be tuned by changing the applied field. The diffractive properties can be optimized for different wavelengths by appropriately choosing cholesteric pitch, cell thickness, and surface treatment.

Disciplines
Publication Date
February 15, 2005
Publisher Statement

This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA: http://dx.doi.org/10.1364/OL.30.000349

Citation Information
B. I. Senyuk, I. I. Smalyukh and Oleg Lavrentovich. "Switchable Two-Dimensional Gratings Based on Field-Induced Layer Undulations in Cholesteric Liquid Crystals" Optics Letters Vol. 30 Iss. 4 (2005)
Available at: http://works.bepress.com/oleg_lavrentovich/43/