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Optics Letters

Optics Letters


  • Editor: Anthony J. Campillo
  • Vol. 31, Iss. 19 — Oct. 1, 2006
  • pp: 2906–2908

Analog low-loss full-range phase modulation by utilizing a V-shaped switched ferroelectric liquid-crystal cell in reflective mode

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

Optics Letters, Vol. 31, Issue 19, pp. 2906-2908 (2006)

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We have studied the analog (V-shaped switching) mode in ferroelectric liquid crystals in reflective mode for analog phase modulation applications. We have found that several combinations of cell thicknesses and input polarization states exist for which near-lossless analog phase modulation with a range of 2 π rad is obtained, and we demonstrate one such combination experimentally. Despite a slight deviation from the ideal conditions, e.g., the tilt angle was 38° instead of the desired 45°, virtually pure 1.6 π rad phase modulation was obtained; the measured values agree very well with our numerical simulations of the real device.

© 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
(260.5430) Physical optics : Polarization

ToC Category:
Optical Devices

Original Manuscript: April 27, 2006
Revised Manuscript: July 20, 2006
Manuscript Accepted: July 22, 2006
Published: September 11, 2006

David Engström, Per Rudquist, Jörgen Bengtsson, Koen D'havé, and Sheila Galt, "Analog low-loss full-range phase modulation by utilizing a V-shaped switched ferroelectric liquid-crystal cell in reflective mode," Opt. Lett. 31, 2906-2908 (2006)

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