Micromachined deformable mirror for optical wavefront compensation

Thomas G. Bifano; Julie A. Perreault; Paul A. Bierden

doi:10.1117/12.407508

22 November 2000 Micromachined deformable mirror for optical wavefront compensation

Thomas G. Bifano, Julie A. Perreault, Paul A. Bierden

Proceedings Volume 4124, High-Resolution Wavefront Control: Methods, Devices, and Applications II; (2000) https://doi.org/10.1117/12.407508
Event: International Symposium on Optical Science and Technology, 2000, San Diego, CA, United States

Abstract

A silicon micromachined deformable mirror ((mu) DM) has been developed by Boston University and Boston Micromachines Corporation (BMC). The (mu) DM employs a flexible silicon mirror supported by mechanical attachments to an array of electrostatic parallel plate actuators. The integrated system of mirror and actuators was fabricated by surface micromachining using polycrystalline silicon thin films. The mirror itself measures 3 mm X 3 mm X 3 micrometer, supported by a square array of 140 electrostatic parallel- electrode actuators through 140 attachment posts. Recently, this (mu) DM was characterized for its electro-mechanical and optical behavior and then integrated into two laboratory-scale adaptive optics systems as a wavefront correction device. Figures of merit for the system include stroke of 2 micrometer, resolution of 10 nm, and frequency bandwidth of 6.7 kHz. The device is compact, exhibits no hysteresis, and has good optical quality.

Citation Download Citation

Thomas G. Bifano, Julie A. Perreault, and Paul A. Bierden "Micromachined deformable mirror for optical wavefront compensation", Proc. SPIE 4124, High-Resolution Wavefront Control: Methods, Devices, and Applications II, (22 November 2000); https://doi.org/10.1117/12.407508

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