Generation of local magnetic field; application to VCSEL
Institut FEMTO-ST, Université de Franche-Comté, CNRS, ENSMM, UTBM, 32 av. de l'Observatoire, 25044 Besançon Cedex, France
Corresponding author: firstname.lastname@example.org
Accepted: 5 March 2009
Published online: 22 April 2009
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.
PACS: 41.20.Gz – Magnetostatics; magnetic shielding, magnetic induction, boundary-value problems / 42.55.Px – Semiconductor lasers; laser diodes / 42.25.Ja – Polarization
© EDP Sciences, 2009