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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 38, Iss. 13 — Jul. 1, 2013
  • pp: 2342–2344

Optically tunable and rewritable diffraction grating with photoaligned liquid crystals

J. Sun, A. K. Srivastava, L. Wang, V. G. Chigrinov, and H. S. Kwok  »View Author Affiliations


Optics Letters, Vol. 38, Issue 13, pp. 2342-2344 (2013)
http://dx.doi.org/10.1364/OL.38.002342


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Abstract

An optically tunable and rewritable liquid crystal (LC) diffraction grating cell has been revealed that consists of an optically active and an optically passive alignment layer. The grating profile is created by confining the LC director distribution in alternate planar and twisted alignment domains by means of photoalignment of the LCs. The proposed grating is optically tunable for diffractive and nondiffractive states with a small response time that depends on the exposure energy and LC parameters. In addition, the grating can be erased and rewritten for different diffracting characteristics. These optically tunable diffractive elements could find application in various photonic devices.

© 2013 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(160.3710) Materials : Liquid crystals
(220.1140) Optical design and fabrication : Alignment

ToC Category:
Diffraction and Gratings

History
Original Manuscript: January 28, 2013
Revised Manuscript: May 31, 2013
Manuscript Accepted: June 3, 2013
Published: June 27, 2013

Citation
J. Sun, A. K. Srivastava, L. Wang, V. G. Chigrinov, and H. S. Kwok, "Optically tunable and rewritable diffraction grating with photoaligned liquid crystals," Opt. Lett. 38, 2342-2344 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-13-2342

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