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Open Access item Transverse and Polarization Mode Selection in VCSELs

Authors:Mulet, Josep
Mirasso, Claudio R.
Balle, Salvador
San Miguel, Maxi
Keywords:VCSEL, Transverse Modes, Laser Switch-on, Polarization E
Issue Date:2001
Publisher:Society of Photo-Optical Instrumentation Engineers
Citation:Proceedings of SPIE 4283: 139-149 (2001)
Abstract:We develop a mesoscopic model of semiconductor dynamics for vertical-cavity surface-emitting lasers which allows us to describe polarization and transverse mode dynamics simultaneously. Within this model, we study the selection processes and the turn-on delay for the switch-on of di erent transverse modes in gain-guided VCSELs. We consider di erent active-region diameters, excitation conditions and current shapes. Following the application of the current pulse, transverse modes become excited in a quite de nite sequence. After the turn-on, the VCSEL initially switcheson in the fundamental transverse mode, but higher-order transverse modes become excited later. In general, the results obtained are in qualitative agreement with experiments reported recently. Finally, we discuss the current shape dependence on the transverse mode selection at threshold.
Publisher version (URL):http://dx.doi.org/10.1117/12.432559
Appears in Collections:(IMEDEA) Comunicaciones congresos

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