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Related Experiment Videos

Optically driven microelectromechanical-system deformable mirror under high-frequency AC bias.

J Khoury1, A Drehman, C L Woods

  • 1Air Force Research Laboratory/SNHC, Hanscom Air Force Base, Massachusetts 01731, USA.

Optics Letters
|March 21, 2006
PubMed
Summary
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A novel optically addressed deformable mirror device uses light to control a membrane mirror. Illumination causes deformation via impedance changes, enabling new optical applications.

Area of Science:

  • Optoelectronics
  • Photonics
  • Materials Science

Background:

  • Deformable mirrors are crucial for adaptive optics.
  • Existing devices often require complex electrical addressing.
  • Optically addressed devices offer potential for simplified control.

Purpose of the Study:

  • To demonstrate a new optically addressed deformable mirror device.
  • To investigate the operational principles of light-induced membrane deformation.
  • To fabricate and model the device's performance.

Main Methods:

  • Fabrication of a device with a pixellated membrane mirror over a photoconductive substrate.
  • Application of a high-frequency AC bias between the membrane and a back electrode.
  • Optical illumination of the device to induce membrane deformation.

Related Experiment Videos

Main Results:

  • Successful fabrication and demonstration of the optically addressed deformable mirror.
  • Observation of membrane deformation triggered by light illumination.
  • Modeling confirmed the mechanism of impedance and bias redistribution.

Conclusions:

  • The demonstrated device offers a new approach to optically controlled deformable mirrors.
  • The device's operation relies on light-modulated impedance changes.
  • This technology holds promise for advanced optical systems.