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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 45, Iss. 1 — Jan. 1, 2006
  • pp: 110–116

Defect-free switchable phase grating

Garry A. Lester, Stephen J. Coulston, and Adrian M. Strudwick  »View Author Affiliations


Applied Optics, Vol. 45, Issue 1, pp. 110-116 (2006)
http://dx.doi.org/10.1364/AO.45.000110


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Abstract

Liquid-crystal-filled polymer structure devices offer a very low cost switchable spatial phase modulator. The phase profile set by the polymer structure may be varied or switched on∕off with an applied field. Defects have been observed in some devices giving rise to spurious diffraction peaks. Computational modeling of the liquid-crystal director profile suggests that these defects might be suppressed if the dimensions of the liquid-crystal region are small. Experimental measurements confirm that this approach is effective in controlling the defects. This provides a route to fabrication of low-cost switchable complex diffractive devices.

© 2006 Optical Society of America

OCIS Codes
(230.2090) Optical devices : Electro-optical devices
(230.3720) Optical devices : Liquid-crystal devices
(230.3990) Optical devices : Micro-optical devices
(230.6120) Optical devices : Spatial light modulators

Citation
Garry A. Lester, Stephen J. Coulston, and Adrian M. Strudwick, "Defect-free switchable phase grating," Appl. Opt. 45, 110-116 (2006)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-45-1-110


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