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Electro-optic polymer spatial light modulator based on a Fabry-Perot interferometer configuration.

Charles Greenlee1, J Luo, K Leedy

  • 1College of Optical Sciences, University of Arizona, Tucson, Arizona 85721, USA. cgreenlee@optics.arizona.edu

Optics Express
|July 1, 2011
PubMed
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A novel spatial light modulator (SLM) using an electro-optic polymer in a Fabry-Perot configuration achieves high-speed, multi-pixel modulation. This technology surpasses existing liquid crystal and digital micromirror devices in speed and offers potential for CMOS compatibility.

Area of Science:

  • Optoelectronics
  • Nonlinear Optics
  • Materials Science

Background:

  • Spatial Light Modulators (SLMs) are crucial for optical information processing.
  • Existing SLM technologies (e.g., liquid crystal, digital micromirror devices) have limitations in speed and integration.
  • Electro-optic polymers offer potential for high-speed optical modulation.

Purpose of the Study:

  • To fabricate and test a novel spatial light modulator (SLM) utilizing a Fabry-Perot interferometer configuration.
  • To investigate the performance of an electro-optic polymer as the nonlinear medium in the SLM.
  • To demonstrate high-speed, multi-pixel modulation capabilities.

Main Methods:

  • Fabrication of a Fabry-Perot interferometer with an SEO100 electro-optic polymer spacer layer.

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  • Testing of the SLM's modulation performance, including pixel operation and frequency response.
  • Measurement of modulation contrast and drive voltage requirements.

    • Main Results:

    • Demonstrated simultaneous modulation of multiple pixels at frequencies from 300 kHz to 800 kHz.
    • Achieved an average modulation contrast of 50% with a 70 V(rms) drive voltage at 100 kHz.
    • Observed modulation speeds significantly faster than current liquid crystal and digital micromirror device technologies.

    Conclusions:

    • The Fabry-Perot based SLM with an electro-optic polymer shows promise for high-speed optical modulation.
    • The device performance indicates feasibility for microwave speeds and CMOS compatibility with further design optimization.
    • This technology represents a significant advancement over existing SLM solutions.