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.
Autori: | |
Titolo: | Self-mixing in VCSELs for multi-parametric sensing applications: Theory and experiment |
Data di pubblicazione: | 2012 |
Nome del convegno: | Conference on Semiconductor Lasers and Laser Dynamics V |
ISBN: | 978-0-8194-9124-4 |
Digital Object Identifier (DOI): | http://dx.doi.org/10.1117/12.946605 |
Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |
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