Implementation and characterization of a flexure-beam micromechanical spatial light modulator

Tseng-Hwang Lin

doi:10.1117/12.181578

1 November 1994 Implementation and characterization of a flexure-beam micromechanical spatial light modulator

Tseng-Hwang Lin

Author Affiliations +

Optical Engineering, Vol. 33, Issue 11, (November 1994). https://doi.org/10.1117/12.181578

Abstract

A phase-only spatial light modulator is a highly efficient component for the filter plane of a real-time correlator. Implementation using flexure-beam micromechanical devices offers many advantages, such as high reflectivity and a high frame rate. However, extra effort is required to ensure high optical efficiency and low parasitic noise. This paper reports on the Texas Instruments implementation of a limited-addressability flexure-beam device that has a fill factor up to 74.3% and provides a dc shield for the analog signal on the mirror. It requires 30 V to modulate the 2π phase modulation of a 633-nm wavelength using an optical-bench setup. The rise and fall times are approximately 3.5 and 2.5 μs, respectively, at π modulation of 546 nm using an interlerometric microscope.

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Tseng-Hwang Lin "Implementation and characterization of a flexure-beam micromechanical spatial light modulator," Optical Engineering 33(11), (1 November 1994). https://doi.org/10.1117/12.181578

Published: 1 November 1994

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