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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 30 — Oct. 20, 2010
  • pp: 5929–5937

Extended phase modulation depth in twisted nematic liquid crystal displays

José Luis Martínez, Ignacio Moreno, Jeffrey A. Davis, Travis J. Hernandez, and Kevin P. McAuley  »View Author Affiliations


Applied Optics, Vol. 49, Issue 30, pp. 5929-5937 (2010)
http://dx.doi.org/10.1364/AO.49.005929


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Abstract

We show how the phase modulation depth in twisted nematic liquid crystal displays (TNLCDs) can be increased dramatically by selecting a polarization configuration with a reduced mean intensity transmission. This phenomenon, which we have validated with various devices, is shown here for a device that presents a phase-only modulation only slightly over π radians in our classical rotated eigenvector configuration, but it is capable of producing close to a 2 π phase depth for a configuration with 5% mean intensity transmission. A quantitative explanation is presented by means of a phasor analysis of the TNLCD eigenvector projections over input and output polarization states. The proposed technique can be a very useful solution in modern TNLCDs that have a very thin liquid crystal layer and a reduced maximum achievable phase modulation.

© 2010 Optical Society of America

OCIS Codes
(060.5060) Fiber optics and optical communications : Phase modulation
(230.3720) Optical devices : Liquid-crystal devices
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Optical Devices

History
Original Manuscript: July 7, 2010
Revised Manuscript: September 3, 2010
Manuscript Accepted: September 10, 2010
Published: October 19, 2010

Citation
José Luis Martínez, Ignacio Moreno, Jeffrey A. Davis, Travis J. Hernandez, and Kevin P. McAuley, "Extended phase modulation depth in twisted nematic liquid crystal displays," Appl. Opt. 49, 5929-5937 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-30-5929


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