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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 21 — Nov. 1, 2006
  • pp: 3158–3160

Three-level phase modulator based on orthoconic antiferroelectric liquid crystals

David Engström, Per Rudquist, Jörgen Bengtsson, Koen D’havé, and Sheila Galt  »View Author Affiliations

Optics Letters, Vol. 31, Issue 21, pp. 3158-3160 (2006)

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Surface-stabilized orthoconic antiferroelectric liquid crystals (OAFLCs) have a director tilt of θ = 45 ° and are, with no field applied, negatively uniaxial with the optic axis perpendicular to the cell substrates. We demonstrate that OAFLCs can be utilized to achieve lossless phase modulation with three almost equidistant phase levels. This turns out to be true also for polymer-stabilized OAFLCs, where the polymer network increases the switching speed of the device without affecting the phase modulation appreciably.

© 2006 Optical Society of America

OCIS Codes
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(160.3710) Materials : Liquid crystals
(230.3720) Optical devices : Liquid-crystal devices
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Optical Devices

Original Manuscript: May 10, 2006
Revised Manuscript: July 11, 2006
Manuscript Accepted: July 15, 2006
Published: October 11, 2006

David Engström, Per Rudquist, Jörgen Bengtsson, Koen D'havé, and Sheila Galt, "Three-level phase modulator based on orthoconic antiferroelectric liquid crystals," Opt. Lett. 31, 3158-3160 (2006)

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