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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 3, Iss. 6 — Jun. 1, 2013
  • pp: 691–699

Amorphous silicon-liquid crystals device for photonic applications

A. Fuentes-Garcia, M. C. Grados-Luyando, J. C. Ramirez-San-Juan, and R. Ramos-Garcia  »View Author Affiliations


Optical Materials Express, Vol. 3, Issue 6, pp. 691-699 (2013)
http://dx.doi.org/10.1364/OME.3.000691


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Abstract

We demonstrate that an hydrogenated amorphous silicon (a:Si-H)-liquid crystals hybrid device could be used for the recording of high resolution (0.8-2 µm) dynamic holograms. A maximum diffraction efficiency of 3.3% was obtained at low power (1.5 mW) He-Ne laser. The nonlinear refractive index change at 0.6 W/cm2 is n2~1x10−2 cm2/W, although small compared to that obtained in dye-doped liquid crystal, is equal to the reported in pure liquid crystal although with much higher power density (~50 W/cm2). The device operates in the red to near-infrared part of the spectrum which makes it attractive due to its potential applications in telecommunications and military applications.

© 2013 OSA

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(090.0090) Holography : Holography
(160.3710) Materials : Liquid crystals
(190.0190) Nonlinear optics : Nonlinear optics

ToC Category:
Liquid Crystals

History
Original Manuscript: February 7, 2013
Revised Manuscript: April 5, 2013
Manuscript Accepted: April 8, 2013
Published: May 1, 2013

Citation
A. Fuentes-Garcia, M. C. Grados-Luyando, J. C. Ramirez-San-Juan, and R. Ramos-Garcia, "Amorphous silicon-liquid crystals device for photonic applications," Opt. Mater. Express 3, 691-699 (2013)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-3-6-691


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