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Laser feedback interferometry: a tutorial on the self-mixing effect for coherent sensing

Abstract : This tutorial presents a guided tour of laser feedback interferometry, from its origin and early development through its implementation to a slew of sensing applications, including displacement, distance, velocity, flow, refractive index, and laser linewidth measurement. Along the way, we provide a step-by-step derivation of the basic rate equations for a laser experiencing optical feedback starting from the standard Lang and Kobayashi model and detail their subsequent reduction in steady state to the excess-phase equation. We construct a simple framework for interferometric sensing applications built around the laser under optical feedback and illustrate how this results in a series of straightforward models for many signals arising in laser feedback interferometry. Finally, we indicate promising directions for future work that harnesses the self-mixing effect for sensing applications.
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https://hal.laas.fr/hal-02019850
Contributor : Emilie Marchand <>
Submitted on : Thursday, February 14, 2019 - 6:03:13 PM
Last modification on : Monday, January 13, 2020 - 2:30:58 PM

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Thomas Taimre, Milan Nikolic, Karl Bertling, Yah Leng Lim, Thierry Bosch, et al.. Laser feedback interferometry: a tutorial on the self-mixing effect for coherent sensing. Advances in Optics and Photonics, Optical Society of America, 2015, 7 (3), pp.570-631. ⟨10.1364/AOP.7.000570⟩. ⟨hal-02019850⟩

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