Statistics – Applications
Scientific paper
Feb 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005spie.5634..748w&link_type=abstract
Advanced Sensor Systems and Applications II. Edited by Rao, Yun-Jiang; Kwon, Osuk Y.; Peng, Gang-Ding. Proceedings of the SPIE,
Statistics
Applications
Scientific paper
In this paper, we demonstrate the evolution of the self-mixing phenomena of dual-polarization microchip Nd:YAG lasers as we change the feedback strength and the frequency difference. At high feedback level the microchip laser's polarization flips orthogonally as the external mirror moves. Especially, we observed that the intensity modulation amplitude varies periodically with the frequency difference of orthogonal polarizations, and that with different types of targets the periodic change always exists. A qualitative model is put forward and is in good agreement with the experimental results. The results can be applied to the self-mixing sensitivity enhancement, and also presents a novel method of absolute distance measurement.
Wan Xinjun
Zhang Shulian
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