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Photoconductive optically driven deformable membrane for spatial light modulator applications utilizing GaAs

Bahareh Haji-Saeed1, Rathna Kolluru, Dana Pyburn

  • 1Department of Physics and Electrical and Computer Engineering, University of Massachusetts, Lowell 01854, USA.

Applied Optics
|April 25, 2006
PubMed
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This study details an optically addressable deformable mirror for spatial light modulation, using an electrostatic membrane mirror above a GaAs substrate. The device shows promise for advanced optical control applications.

Area of Science:

  • Optoelectronics
  • Microelectromechanical systems (MEMS)
  • Materials Science

Background:

  • Spatial light modulators (SLMs) are crucial for optical information processing.
  • Deformable mirrors offer dynamic control over optical wavefronts.
  • Optically addressable devices enable remote and precise control.

Purpose of the Study:

  • To fabricate and characterize a novel optically addressable deformable mirror.
  • To investigate the device's operational principles for SLM applications.
  • To analyze mirror deformation based on optical and electrical parameters.

Main Methods:

  • Fabrication of a pixellated membrane mirror on a photoconductive substrate.
  • Utilizing an electrostatic actuation mechanism.

Related Experiment Videos

  • Characterization using a Michelson interferometer to measure deformation.

    • Main Results:

    • Successful fabrication of the optically addressable deformable mirror.
    • Demonstrated mirror deformation controlled by optical illumination and applied voltage.
    • Characterization data analyzed as a function of illumination, voltage, and frequency.

    Conclusions:

    • The fabricated device functions as an optically addressable deformable mirror.
    • The device shows potential for use in spatial light modulators.
    • Further analysis and optimization can enhance performance for optical applications.