Optical accelerometer design based on laser self-mixing interference

Ying Yang; Xingfei Li; Ke Kou; Limin Zhang

doi:10.1117/12.2076463

13 March 2015 Optical accelerometer design based on laser self-mixing interference

Ying Yang, Xingfei Li, Ke Kou, Limin Zhang

Proceedings Volume 9369, Photonic Instrumentation Engineering II; 93690R (2015) https://doi.org/10.1117/12.2076463
Event: SPIE OPTO, 2015, San Francisco, California, United States

Abstract

A novel optical accelerometer based on laser self-mixing effect is presented and experimentally demonstrated, which consists of a mass-loaded elastic-beam assembly and laser self-mixing interferometer. Under external acceleration, an inertial force is applied to the mass, flexible beams deflect from their equilibrium position. The deflection can be read out by the self-mixing interferometer. In order to reduce the impact of higher harmonic, wavelet analysis is introduced to remove singular points. Preliminary results indicate that the resolution is 0.19μg/Hz^1/2 within a bandwidth of 100Hz. The optical accelerometer has the potential to achieve high-precision, compact accelerometers.

Citation Download Citation

Ying Yang, Xingfei Li, Ke Kou, and Limin Zhang "Optical accelerometer design based on laser self-mixing interference", Proc. SPIE 9369, Photonic Instrumentation Engineering II, 93690R (13 March 2015); https://doi.org/10.1117/12.2076463

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