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Sensitivity analysis of light force accelerometer based on optical trapping Mie microsphere

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Abstract

For achieving the greatest sensitivity, numerical simulation is proposed to optimize the parameters of light force accelerometer (LFA). Firstly, the basic principle of the LFA is analyzed, and the mathematical model is established to describe the axial and radial optical trapping forces on microspheres in the fundamental mode Gaussian laser beam. Secondly, the axial and radial optical trapping forces applied on Mie spheres are simulated to obtain the optimal parameters of open-loop LFA. Results show that the sensitivity can reach 103 μm/g. Finally, the LFA system is proposed based on the closed-loop scheme with dual beams. This can provide reference for the design and fabrication of LFA in future.

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Authors and Affiliations

  1. Key Laboratory of Micro-nano Measurement-Manipulation and Physics, Ministry of Education, Fundamental Science on Novel Inertial Instrument & Navigation System Technology Laboratory, Beijing University of Aeronautics and Astronautics, Beijing, 100191, China

    Li-shuang Feng  (冯丽爽), Hong-chen Jiao  (焦洪臣) & Bao-yin Yao  (姚保寅)

Authors
  1. Li-shuang Feng  (冯丽爽)
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  2. Hong-chen Jiao  (焦洪臣)
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  3. Bao-yin Yao  (姚保寅)
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Correspondence to Hong-chen Jiao  (焦洪臣).

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Feng, Ls., Jiao, Hc. & Yao, By. Sensitivity analysis of light force accelerometer based on optical trapping Mie microsphere. Optoelectron. Lett. 10, 77–80 (2014). https://doi.org/10.1007/s11801-014-3197-5

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  • DOI: https://doi.org/10.1007/s11801-014-3197-5

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