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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 8 — Apr. 9, 2012
  • pp: 8431–8441

Flicker minimization in an LCoS spatial light modulator

Jorge García-Márquez, Victor López, Arturo González-Vega, and Enrique Noé  »View Author Affiliations

Optics Express, Vol. 20, Issue 8, pp. 8431-8441 (2012)

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We present a method for reducing the phase flicker originated by the pulsed modulation of a Liquid Crystal on Silicon (LCoS) Spatial Light Modulator (SLM). It consists in reducing the temperature of the LCoS in a controlled way, in order to increase the viscosity of the liquid crystal. By doing this, we increase the time response of the liquid crystal, and thus reduce the amplitude of phase fluctuations. We evaluate the efficacy of this method quantifying the temporal evolution of phase shift using an experiment that is insensitive to optical polarization fluctuations. Additionally, we determine the effect of the temperature reduction on the effective phase modulation capability of the LCoS. We demonstrate that a reduction of up to 80% of the flicker initial value can be achieved when the LCoS is brought to −8 °C.

© 2012 OSA

OCIS Codes
(050.5080) Diffraction and gratings : Phase shift
(120.3180) Instrumentation, measurement, and metrology : Interferometry
(120.5050) Instrumentation, measurement, and metrology : Phase measurement
(230.3720) Optical devices : Liquid-crystal devices
(230.6120) Optical devices : Spatial light modulators

ToC Category:
Optical Devices

Original Manuscript: December 21, 2011
Revised Manuscript: February 22, 2012
Manuscript Accepted: February 23, 2012
Published: March 27, 2012

Jorge García-Márquez, Victor López, Arturo González-Vega, and Enrique Noé, "Flicker minimization in an LCoS spatial light modulator," Opt. Express 20, 8431-8441 (2012)

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