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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 8 — Aug. 1, 2007
  • pp: 1987–1994

Impact of orthogonal optical feedback on the polarization switching of vertical-cavity surface-emitting lasers

Jon Paul, Cristina Masoller, Yanhua Hong, Paul S. Spencer, and K. Alan Shore  »View Author Affiliations


JOSA B, Vol. 24, Issue 8, pp. 1987-1994 (2007)
http://dx.doi.org/10.1364/JOSAB.24.001987


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Abstract

We study experimentally and numerically the influence of orthogonal optical feedback on the polarization-resolved light versus bias current characteristic ( L I curve) of vertical-cavity surface-emitting lasers (VCSELs). The feedback scheme is such that only one linear polarization is selected to be fed back into the laser while the orthogonal polarization is completely suppressed before the output is rotated 90 ° and reinjected into the laser. We experimentally demonstrate that weak feedback levels modify the polarization switching point only slightly, but as the feedback increases the otherwise depressed mode grows and the hysteresis is suppressed. While polarization-preserved and X-orthogonal feedback have similar effects (X indicates the direction of the polarization selected at threshold), Y-orthogonal feedback strongly modifies the shape of the L I curve, even suppressing the polarization-switching for strong enough feedback. Numerical simulations of the spin-flip model show good qualitative agreement with the observations. We also analyze the influence of various parameters, such as linear birefringence, dichroism, and the spin-flip relaxation rate.

© 2007 Optical Society of America

OCIS Codes
(250.7260) Optoelectronics : Vertical cavity surface emitting lasers
(260.5430) Physical optics : Polarization

ToC Category:
Optoelectronics

History
Original Manuscript: October 27, 2006
Revised Manuscript: March 1, 2007
Manuscript Accepted: April 12, 2007
Published: July 19, 2007

Citation
Jon Paul, Cristina Masoller, Yanhua Hong, Paul S. Spencer, and K. Alan Shore, "Impact of orthogonal optical feedback on the polarization switching of vertical-cavity surface-emitting lasers," J. Opt. Soc. Am. B 24, 1987-1994 (2007)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-24-8-1987

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