Affiliation:
1. Shanghai University
2. Shanghai Industrial Technology Research Institute
3. University of Chinese Academy of Sciences
Abstract
We previously designed a dual-axis piezoelectric MEMS mirror with a low crosstalk gimbal structure, which is utilized as the key device for further research for laser beam scanning. This paper mainly focuses on studying the Lissajous scanning resolution of this MEMS mirror with frequency ratio and phase modulation. For accurately evaluating the scanning resolution, the center angular resolution of Lissajous scanning is redefined by theoretical calculation and verified with experimental measurement. Meanwhile, the scanning nonlinearity of MEMS mirror is studied carefully. Finally, the MEMS mirror works at the state of pseudo-resonance, and the center angular resolution better than 0.16° (H) × 0.03° (V) is achieved at a scanning Field of view (FoV) of 35.0° (H) × 16.5° (V). Moreover, a feasible route of resolution adjustable Lissajous scanning is provided by optimization of frequency ratio and phase modulation, which is helpful for high definition and high frame rate (HDHF) laser scanning imaging with the dual-axis mirror.
Funder
Science and Technology Commission of Shanghai Municipality
R&D Program of Scientific Instruments and Equipment, Chinese Academy of Sciences
National Key Research and Development Program of China
Subject
Atomic and Molecular Physics, and Optics
Cited by
6 articles.
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