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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 3, Iss. 4 — Apr. 1, 2013
  • pp: 496–501

Enhanced light absorption with a cholesteric liquid crystal layer

Ivan V. Timofeev, Vasily G. Arkhipkin, Stepan Ya. Vetrov, Victor Ya. Zyryanov, and Wei Lee  »View Author Affiliations

Optical Materials Express, Vol. 3, Issue 4, pp. 496-501 (2013)

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We discuss the trapping features of cholesteric liquid crystal as a self-organized photonic crystal and suggest it for absorption improvement. The imperfection of the absorbing surface is manifested by the reflection originating from the indispensable impedance mismatch. The reflection can be suppressed by an additional surface coating to reflect the light back to the absorber once again. In the simple consideration this reflection loop is possible only twice. For a right-handed CLC coating, the boundary reflection switches the light polarization from left to right circular in the first loop and it switches in the second loop back to the left circular polarization before the emerging light finally escapes from the absorbing process. The enhancement of light absorption is possible in the frequency range as large as the photonic bang gap of the cholesteric layer, which can be adjusted as desired.

© 2013 OSA

OCIS Codes
(160.3710) Materials : Liquid crystals
(230.3720) Optical devices : Liquid-crystal devices
(160.1585) Materials : Chiral media
(230.5298) Optical devices : Photonic crystals

ToC Category:
Liquid Crystals

Original Manuscript: February 15, 2013
Revised Manuscript: March 23, 2013
Manuscript Accepted: March 24, 2013
Published: March 26, 2013

Ivan V. Timofeev, Vasily G. Arkhipkin, Stepan Ya. Vetrov, Victor Ya. Zyryanov, and Wei Lee, "Enhanced light absorption with a cholesteric liquid crystal layer," Opt. Mater. Express 3, 496-501 (2013)

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