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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 26 — Dec. 22, 2008
  • pp: 21282–21296

Modeling thermal effects and polarization competition in vertical-cavity surface-emitting lasers

C. Masollera and M. S. Torreb  »View Author Affiliations


Optics Express, Vol. 16, Issue 26, pp. 21282-21296 (2008)
http://dx.doi.org/10.1364/OE.16.021282


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Abstract

We analyze the influence of thermal effects on the polarization-resolved light-current (LI) characteristics of vertical-cavity surface-emitting lasers (VCSELs). We use a model that is an extension of the spin-flip model incorporating material gain that is frequency and temperature dependent, and a rate equation for the temperature of the active region, which takes into account decay to a fixed substrate temperature, Joule heating and nonradiative recombination heating. The model also incorporates the red shift for increasing temperature of the gain curve and of the cavity resonance. The temperature sensitivity of the lasing threshold current is found to be in good qualitative agreement with observations and with previous reports based on detailed microscopic models. The temperature dependence of the polarization switching point, when the dominant polarization turn off and the orthogonal polarization emerges, is characterized in terms of various model parameters, such as the room-temperature gain-cavity offset, the subtracte temperature, and the size of the active region.

© 2008 Optical Society of America

OCIS Codes
(140.3430) Lasers and laser optics : Laser theory
(250.7260) Optoelectronics : Vertical cavity surface emitting lasers
(260.5430) Physical optics : Polarization

ToC Category:
Optoelectronics

History
Original Manuscript: October 31, 2008
Revised Manuscript: November 26, 2008
Manuscript Accepted: November 26, 2008
Published: December 9, 2008

Citation
C. Masoller and M. S. Torre, "Modeling thermal effects and polarization competition in vertical-cavity surface-emitting lasers," Opt. Express 16, 21282-21296 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-26-21282


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