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Generation of local magnetic field; application to VCSEL

Published online by Cambridge University Press:  22 April 2009

O. Gaiffe
Affiliation:
Institut FEMTO-ST, Université de Franche-Comté, CNRS, ENSMM, UTBM, 32 av. de l'Observatoire, 25044 Besançon Cedex, France
S. Euphrasie
Affiliation:
Institut FEMTO-ST, Université de Franche-Comté, CNRS, ENSMM, UTBM, 32 av. de l'Observatoire, 25044 Besançon Cedex, France
B. Cretin
Affiliation:
Institut FEMTO-ST, Université de Franche-Comté, CNRS, ENSMM, UTBM, 32 av. de l'Observatoire, 25044 Besançon Cedex, France
P. Vairac*
Affiliation:
Institut FEMTO-ST, Université de Franche-Comté, CNRS, ENSMM, UTBM, 32 av. de l'Observatoire, 25044 Besançon Cedex, France
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Abstract

In this article, we report on the simulation and realization of a magnetic circuit allowing to apply an axial magnetic field higher than 1 T. The proposed electromagnet is used to investigate the influence of a magnetic field on the polarization behavior of a vertical-cavity-surface-emitting laser (VCSEL). A non-linear polarization behavior can be experimentally observed for currents as low as the threshold current, provided that the magnetic field is strong enough.

Keywords

Type
Research Article
Copyright
© EDP Sciences, 2009

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