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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 33 — Nov. 20, 2009
  • pp: 6506–6510

High-diffraction-efficiency holographic gratings in C 60 -doped nematics

Yong Zhang, Fengfeng Yao, Yanbo Pei, and Xiudong Sun  »View Author Affiliations


Applied Optics, Vol. 48, Issue 33, pp. 6506-6510 (2009)
http://dx.doi.org/10.1364/AO.48.006506


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Abstract

Holographic gratings were recorded in C 60 -doped nematic liquid crystals (NLCs) by two-beam coupling. The asymmetric energy transfer dependence on the polarity of the applied voltage and multiple diffractions in two-beam coupling indicated that the gratings were photorefractive and worked in the Raman–Nath regime. The diffraction efficiencies (DEs) of the main diffraction orders were investigated at different applied voltages. The diffractive intensity distribution was asymmetric, and a first-order DE as high as 66% (as high as 84% excluding the influence of the scattering) was obtained from the 20 μm thick C 60 -doped NLC film.

© 2009 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(160.3710) Materials : Liquid crystals
(190.5330) Nonlinear optics : Photorefractive optics

ToC Category:
Diffraction and Gratings

History
Original Manuscript: July 1, 2009
Revised Manuscript: October 27, 2009
Manuscript Accepted: October 30, 2009
Published: November 17, 2009

Citation
Yong Zhang, Fengfeng Yao, Yanbo Pei, and Xiudong Sun, "High-diffraction-efficiency holographic gratings in C60-doped nematics," Appl. Opt. 48, 6506-6510 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-33-6506


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