30 October 2001 Simple extrashort external-cavity laser self-mixing interferometer for acceleration sensing
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Proceedings Volume 4596, Advanced Photonic Sensors and Applications II; (2001) https://doi.org/10.1117/12.447353
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore
Abstract
We have fabricated and tested an external cavity laser with a micromachined flat polysilicon micro-mirror. The device works using a very short external cavity laser configuration (approximately equals 10micrometers ) allowing to remove all optical element in the cavity while providing enough feedback to modulate the intensity of the laser. We have shown that we could obtain feedback coefficient larger than 0.5, providing an increased sensitivity for sensor application. The device shows interesting characteristics for developing a compact and simple displacement/acceleration sensor with large dynamical range and a resolution estimated below 0.01 nm.
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Franck Alexis Chollet, Franck Alexis Chollet, Gopalkrishna M. Hegde, Gopalkrishna M. Hegde, Anand Krishna Asundi, Anand Krishna Asundi, Ai Qun Liu, Ai Qun Liu, } "Simple extrashort external-cavity laser self-mixing interferometer for acceleration sensing", Proc. SPIE 4596, Advanced Photonic Sensors and Applications II, (30 October 2001); doi: 10.1117/12.447353; https://doi.org/10.1117/12.447353
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