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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 10, Iss. 11 — Jun. 3, 2002
  • pp: 482–487

Surface-sustained permanent gratings in nematic liquid crystals doped with carbon nanotubes

Wei Lee, Hui-Yu Chen, and Sheng-Long Yeh  »View Author Affiliations

Optics Express, Vol. 10, Issue 11, pp. 482-487 (2002)

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Response properties of photoinduced gratings were studied in planar cells of liquid crystal doped with multiwalled carbon nanotubes. The grating formation time deduced from beam-coupling measurements was obtained to be ~30 ms. Absorption spectroscopy implies that the permanent gratings are associated with periodically distributed carbonaceous material adsorbed on the inner surfaces of the cell windows under prolonged illumination to the 514.5-nm beams, giving rise to the persistent light-induced modulation of the easy axis.

© 2002 Optical Society of America

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(160.3710) Materials : Liquid crystals
(160.5320) Materials : Photorefractive materials
(190.7070) Nonlinear optics : Two-wave mixing

ToC Category:
Research Papers

Original Manuscript: April 29, 2002
Revised Manuscript: May 31, 2002
Published: June 3, 2002

Wei Lee, Hui-Yu Chen, and Sheng-Long Yeh, "Surface-sustained permanent gratings in nematic liquid crystals doped with carbon nanotubes," Opt. Express 10, 482-487 (2002)

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