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.
Self-mixing in VCSELs for multi-parametric sensing applications: Theory and experiment / Columbo, Lorenzo; De Lucia, Francesco; Brambilla, Massimo; Dabbicco, Maurizio; Scamarcio, Gaetano. - STAMPA. - 8432:(2012). (Intervento presentato al convegno Conference on Semiconductor Lasers and Laser Dynamics V tenutosi a Bruxelles nel 16-19 April 2012) [10.1117/12.946605].
Self-mixing in VCSELs for multi-parametric sensing applications: Theory and experiment
Massimo Brambilla;
2012-01-01
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
