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Proceedings Paper

Self-mixing in VCSELs for multi-parametric sensing applications: theory and experiment
Author(s): Lorenzo Columbo; Francesco De Lucia; Massimo Brambilla; Maurizio Dabbicco; Gaetano Scamarcio
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Paper 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.

Paper Details

Date Published: 11 May 2012
PDF: 9 pages
Proc. SPIE 8432, Semiconductor Lasers and Laser Dynamics V, 843226 (11 May 2012); doi: 10.1117/12.946605
Show Author Affiliations
Lorenzo Columbo, Istituto di Fotonica e Nanotecnologie, CNR, Univ. degli Studi di Bari (Italy)
Univ. degli Studi dell'Insubria (Italy)
Francesco De Lucia, Istituto di Fotonica e Nanotecnologie, CNR, Univ. degli Studi di Bari (Italy)
Massimo Brambilla, Istituto di Fotonica e Nanotecnologie, CNR, Univ. degli Studi di Bari (Italy)
Maurizio Dabbicco, Istituto di Fotonica e Nanotecnologie, CNR, Univ. degli Studi di Bari (Italy)
Gaetano Scamarcio, Istituto di Fotonica e Nanotecnologie, CNR, Univ. degli Studi di Bari (Italy)


Published in SPIE Proceedings Vol. 8432:
Semiconductor Lasers and Laser Dynamics V
Krassimir Panajotov; Marc Sciamanna; Angel Valle; Rainer Michalzik, Editor(s)

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