Time- and frequency-domain verification of laser self-mixing interference with two-external-cavity feedback

Bingkun Gao; Yuwei Liu; Chunlei Jiang; Peng Chen

doi:10.1117/1.OE.57.6.066114

21 June 2018 Time- and frequency-domain verification of laser self-mixing interference with two-external-cavity feedback

Bingkun Gao, Yuwei Liu, Chunlei Jiang, Peng Chen

Author Affiliations +

Optical Engineering, Vol. 57, Issue 6, 066114 (June 2018). https://doi.org/10.1117/1.OE.57.6.066114

Abstract

The laser self-mixing interference (SMI) with two-external-cavity feedback used with a semiconductor laser is proposed and validated in the time and frequency domain. Simulation and experimental results show that mixed SMI signal is the sum of two independent SMI signals under weak feedback. This structure can measure two vibrations simultaneously using only a single detector and a single laser.

Citation Download Citation

Bingkun Gao, Yuwei Liu, Chunlei Jiang, and Peng Chen "Time- and frequency-domain verification of laser self-mixing interference with two-external-cavity feedback," Optical Engineering 57(6), 066114 (21 June 2018). https://doi.org/10.1117/1.OE.57.6.066114

Received: 15 February 2018; Accepted: 30 May 2018; Published: 21 June 2018

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