Albert, J,Soriano, MC,Veretennicoff, I,Panajotov, K,Danckaert, J,Porta, PA,Curtin, DP,McInerney, JG;

2004

January

IEEE Journal of Selected Topics In Quantum Electronics

Laser Doppler velocimetry with polarization-bistable VCSELs

Validated

()

bistability laser Doppler velocimetry polarization switching (PS) vertical-cavity surface-emitting laser (VCSEL) SURFACE-EMITTING LASERS OPTICAL FEEDBACK SEMICONDUCTOR-LASER CAVITY DIODE

10

1006

1012

In this paper 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.

DOI 10.1109/JSTQE.2004.836011