Self-mixing laser Doppler velocimeter based on dual frequency lasers

Gang Liu; Shulian Zhang

doi:10.1117/12.571180

20 January 2005 Self-mixing laser Doppler velocimeter based on dual frequency lasers

Gang Liu, Shulian Zhang

Proceedings Volume 5633, Advanced Materials and Devices for Sensing and Imaging II; (2005) https://doi.org/10.1117/12.571180
Event: Photonics Asia, 2004, Beijing, China

Abstract

A self-mixing laser Doppler velocimeter is designed based on dual frequency laser. We can receive two beat signals and analyze them in frequency domain. The value of Doppler frequency shift is half of the distance between the two components in the power spectrum while the sign of Doppler frequency shift can be easily determined by the relative position of the two components in the power spectrum.

Citation Download Citation

Gang Liu and Shulian Zhang "Self-mixing laser Doppler velocimeter based on dual frequency lasers", Proc. SPIE 5633, Advanced Materials and Devices for Sensing and Imaging II, (20 January 2005); https://doi.org/10.1117/12.571180

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