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Related Experiment Video

Updated: May 23, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

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Published on: January 28, 2019

Flicker minimization in an LCoS Spatial Light Modulator.

Jorge García-Márquez1, Victor López, Arturo González-Vega

  • 1Centro de Investigaciones en Óptica, Loma del Bosque 115, CP 37150, León, Mexico. jgarciam@cio.mx

Optics Express
|April 20, 2012
PubMed
Summary

Lowering the temperature of Liquid Crystal on Silicon (LCoS) Spatial Light Modulators (SLMs) reduces phase flicker by increasing liquid crystal viscosity and response time. This method effectively minimizes phase fluctuations in SLM devices.

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Area of Science:

  • Optics and Photonics
  • Materials Science

Background:

  • Pulsed modulation in Liquid Crystal on Silicon (LCoS) Spatial Light Modulators (SLMs) can cause phase flicker, impacting optical system performance.
  • Phase flicker arises from the dynamic response of liquid crystals to modulation signals.

Purpose of the Study:

  • To introduce and validate a method for reducing phase flicker in LCoS SLMs.
  • To investigate the relationship between LCoS temperature, liquid crystal viscosity, and phase stability.

Main Methods:

  • Controlled reduction of LCoS operating temperature to increase liquid crystal viscosity.
  • Quantification of phase shift temporal evolution using a polarization-insensitive experimental setup.
  • Assessment of temperature effects on the effective phase modulation capability.

Main Results:

  • A significant reduction in phase flicker amplitude was achieved by lowering the LCoS temperature.
  • An up to 80% reduction in flicker was observed when the LCoS was cooled to -8 °C.
  • The method effectively stabilizes phase fluctuations without compromising modulation capability.

Conclusions:

  • Controlled cooling is an effective strategy to mitigate phase flicker in LCoS SLMs.
  • Optimizing LCoS temperature offers a practical approach to enhance optical system stability and performance.