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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 16 — Jun. 1, 2011
  • pp: 2326–2333

Gradient polymer-disposed liquid crystal single layer of large nematic droplets for modulation of laser light

Georgi B. Hadjichristov, Yordan G. Marinov, and Alexander G. Petrov  »View Author Affiliations


Applied Optics, Vol. 50, Issue 16, pp. 2326-2333 (2011)
http://dx.doi.org/10.1364/AO.50.002326


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Abstract

The light modulating ability of gradient polymer-disposed liquid crystal (PDLC) single layer of large droplets formed by nematic E7 in UV-cured polymer NOA65 is studied. Operating at relatively low voltages, such PDLC film with a of thickness 10 25 μm and droplet size up to 50 μm exhibits a good contrast ratio and is capable of producing a large phase shift for the propagating coherent light. For a linearly polarized He–Ne laser ( λ = 633 nm ), an electrically commanded phase shift as large as π / 2 can be obtained by the large-droplet region of the film. The electrically produced phase shift and its spatial profile controlled by the thickness of the gradient PDLC single layers of large nematic droplets can be useful for tunable spatial light modulators and other devices for active control of laser light.

© 2011 Optical Society of America

OCIS Codes
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(230.3720) Optical devices : Liquid-crystal devices
(230.4110) Optical devices : Modulators

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: January 12, 2011
Revised Manuscript: March 24, 2011
Manuscript Accepted: March 24, 2011
Published: May 20, 2011

Citation
Georgi B. Hadjichristov, Yordan G. Marinov, and Alexander G. Petrov, "Gradient polymer-disposed liquid crystal single layer of large nematic droplets for modulation of laser light," Appl. Opt. 50, 2326-2333 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-16-2326

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