Self-mixing in VCSELs for multi-parametric sensing applications: theory and experiment

Lorenzo Columbo; Francesco De Lucia; Massimo Brambilla; Maurizio Dabbicco; Gaetano Scamarcio

doi:10.1117/12.946605

11 May 2012 Self-mixing in VCSELs for multi-parametric sensing applications: theory and experiment

Lorenzo Columbo, Francesco De Lucia, Massimo Brambilla, Maurizio Dabbicco, Gaetano Scamarcio

Proceedings Volume 8432, Semiconductor Lasers and Laser Dynamics V; 843226 (2012) https://doi.org/10.1117/12.946605
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

We consider a multi-transverse mode Vertical Cavity Surface Emitting Laser (VCSEL) subject to optical feedback. When the field profile can be described in terms of few Gauss-Laguerre modes we show that the self-mixing interferometric signal exhibits features peculiar of the spatial distribution and/or polarization state of the re-injected field. Based on these results we provide both theoretically and experimentally the proof-of-principle of an operational scheme for a sensor that can be used to simultaneously measure target translations along the optical axis and target rotations in the orthogonal plane.

Citation Download Citation

Lorenzo Columbo, Francesco De Lucia, Massimo Brambilla, Maurizio Dabbicco, and Gaetano Scamarcio "Self-mixing in VCSELs for multi-parametric sensing applications: theory and experiment", Proc. SPIE 8432, Semiconductor Lasers and Laser Dynamics V, 843226 (11 May 2012); https://doi.org/10.1117/12.946605

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