Laser Doppler velocimetry with polarization-bistable VCSELs

We present a rate equation model of a single mode vertical-cavity surface-emitting laser (VCSEL) with two states of linear polarization, subject to Doppler-shifted optical feedback. Recent experimental work has shown that the polarization bistability often observed in VCSELs can be exploited to enha...

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Veröffentlicht in:	IEEE journal of selected topics in quantum electronics 2004-09, Vol.10 (5), p.1006-1012
Hauptverfasser:	Albert, J., Soriano, M.C., Veretennicoff, I., Panajotov, K., Danckaert, J., Porta, P.A., Curtin, D.P., McInerney, J.G.
Format:	Artikel
Sprache:	eng
Schlagworte:	Bistability Equations Laser applications laser Doppler velocimetry Laser feedback Laser modes Laser velocimetry Optical feedback Optical polarization polarization switching (PS) Semiconductor lasers Surface emitting lasers Vertical cavity surface emitting lasers vertical-cavity surface-emitting laser (VCSEL)
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Beschreibung
Zusammenfassung:	We present a rate equation model of a single mode vertical-cavity surface-emitting laser (VCSEL) with two states of linear polarization, subject to Doppler-shifted optical feedback. Recent experimental work has shown that the polarization bistability often observed in VCSELs can be exploited to enhance the responsivity of these semiconductor lasers in speed-sensing applications. We review these experimental results briefly and use the rate equation model to explain the increased signal-to-noise ratio.
ISSN:	1077-260X 1558-4542
DOI:	10.1109/JSTQE.2004.836011