Modeling and experimental verification of laser self-mixing interference phenomenon with the structure of two-external-cavity feedback
Abstract
A semiconductor laser employed with two-external-cavity feedback structure for laser self-mixing interference (SMI) phenomenon is investigated and analyzed. The SMI model with two directions based on F-P cavity is deduced, and numerical simulation and experimental verification were conducted. Experimental results show that the SMI with the structure of two-external-cavity feedback under weak light feedback is similar to the sum of two SMIs.
- Publication:
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Optics Communications
- Pub Date:
- March 2018
- DOI:
- 10.1016/j.optcom.2017.11.027
- Bibcode:
- 2018OptCo.410..690C
- Keywords:
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- The structure of two-external-cavity feedback;
- Self-mixing interference;
- Two external object movements