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Bandwidth Improvement of Fast Steering Mirror by FEDA

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4 Author(s)
Yu Zheng ; Dept. of Electrooptical Eng., Changchun Univ. of Sci. & Technol. ; Guoyu Zhang ; Bing Xu ; Wenhan Jiang

The bandwidth of fast steering mirror (FSM) is about several tens of hertz which is related to Tylar frequency of atmospheric turbulence, and the bandwidth of deformable mirror ranges from several tens to hundreds hertz relates to Greenwood frequency of atmospheric turbulence. According to practical experience, the ratio of fast steering mirror and deformable mirror should be from one is to five to one is to ten when corrects static atmospheric turbulence, and should be one is to two even one is to one when corrects dynamic targets, such as plane and satellite. All these require improve fast steering mirror's bandwidth to several hundreds frequency. The reason why fast steering mirror's harmonic frequency lower is analyzed in the paper set out from the point of fast steering mirror's structural designation, and the way of improve its bandwidth by finite element dynamic analysis (FEDA) is discussed detailed

Published in:

Nano/Micro Engineered and Molecular Systems, 2006. NEMS '06. 1st IEEE International Conference on

Date of Conference:

18-21 Jan. 2006