Laser Diode Self-Mixing Interference Based on Phase Measurement Method

Abstract:

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In order to improve the displacement measurement accuracy of the laser diode self-mixing interference (SMI), phase measurement method is introduced in the SMI signal analysis. In this paper, three modulation technique have been proposed: injection current modulation, external cavity length modulation and sinusoidal phase modulation. Measurement principle of the three modulation techinque are briefly explained. Design of the experimental system, measurement results of micro-displacement will be reported.

Info:

Periodical:

Key Engineering Materials (Volumes 381-382)

Edited by:

Wei Gao, Yasuhiro Takaya, Yongsheng Gao and Michael Krystek

Pages:

247-250

DOI:

10.4028/www.scientific.net/KEM.381-382.247

Citation:

M. Wang and D. M. Guo, "Laser Diode Self-Mixing Interference Based on Phase Measurement Method", Key Engineering Materials, Vols. 381-382, pp. 247-250, 2008

Online since:

June 2008

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Price:

$35.00

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