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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 14 — Jul. 15, 2010
  • pp: 2439–2441

Fabrication and characterization of gratings based on thermal shrinkable reactive cholesteric mesogens

Chin-Kai Chang, Hui-Lung Kuo, and Mei-Chih Peng  »View Author Affiliations

Optics Letters, Vol. 35, Issue 14, pp. 2439-2441 (2010)

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Gratings were successfully fabricated by photolithography by using a particular reactive cholesteric liquid crystal at two different temperatures. The reflection band of the grating was found to be wider than that of a film having a single helical order, because the grating exhibited a binary helical order. Moreover, the surface topography of the grating was regulated by using photomasks with different pitches. The optical reflection spectrum of this grating structure spans two reflection spectra of cholesteric liquid crystal films that were prepared by UV curing at two heating temperatures. Experimental results reveal that the method proposed in this study can be used to produce broadband circular polarizing films.

© 2010 Optical Society of America

OCIS Codes
(050.2770) Diffraction and gratings : Gratings
(160.3710) Materials : Liquid crystals
(230.3720) Optical devices : Liquid-crystal devices

ToC Category:

Original Manuscript: June 4, 2010
Revised Manuscript: June 22, 2010
Manuscript Accepted: June 23, 2010
Published: July 12, 2010

Chin-Kai Chang, Hui-Lung Kuo, and Mei-Chih Peng, "Fabrication and characterization of gratings based on thermal shrinkable reactive cholesteric mesogens," Opt. Lett. 35, 2439-2441 (2010)

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