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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 52, Iss. 12 — Apr. 20, 2013
  • pp: 2610–2618

Spatially resolved phase-response calibration of liquid-crystal-based spatial light modulators

Stephan Reichelt  »View Author Affiliations


Applied Optics, Vol. 52, Issue 12, pp. 2610-2618 (2013)
http://dx.doi.org/10.1364/AO.52.002610


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Abstract

Methods for measuring and compensating the nonlinear electro-optical effect of transmissive, parallel-aligned liquid crystal (LC)-based spatial light modulators (SLMs) are presented. Particularly, the analysis is focused on the spatial nonuniformity of the voltage versus phase modulation characteristics for an active-matrix-driven, electrically controlled birefringence type LC-SLM. A high-quality reconstruction from phase-only modulating SLMs requires a well-calibrated phase addressing across the entire SLM panel. I discuss how the commonly inherent phase-response inhomogeneity of LC-SLM is characterized by purposeful localized measurement techniques. This phase-response inhomogeneity is efficiently compensated by utilizing a Legendre polynomial representation in combination with a remapping of an 8 bit gray level addressing. The calibration procedure is corroborated by measurement data. The LC-SLM’s experimental demonstration finally verifies the resultant improvement in holographic imaging.

© 2013 Optical Society of America

OCIS Codes
(090.2870) Holography : Holographic display
(120.5060) Instrumentation, measurement, and metrology : Phase modulation
(220.1000) Optical design and fabrication : Aberration compensation
(230.3720) Optical devices : Liquid-crystal devices
(230.6120) Optical devices : Spatial light modulators
(090.1995) Holography : Digital holography

ToC Category:
Holography

History
Original Manuscript: January 23, 2013
Revised Manuscript: March 11, 2013
Manuscript Accepted: March 12, 2013
Published: April 15, 2013

Citation
Stephan Reichelt, "Spatially resolved phase-response calibration of liquid-crystal-based spatial light modulators," Appl. Opt. 52, 2610-2618 (2013)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-52-12-2610


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