Title :
Analysis of transverse mode competition of VCSELs based on a spatially independent model
Author :
Zhang, Hongbin ; Mrozynski, Gerd ; Wallrabenstein, Amir ; Schrage, Juergen
Author_Institution :
Dept. of Electr. Eng. & Inf. Technol., Univ. of Paderborn, Germany
Abstract :
A spatially independent model of vertical-cavity surface-emitting lasers (VCSELs) is built up in this paper by integrating the spatially dependent rate equations over the cross section of the active region of a VCSEL. The transverse modal structure is presented and discussed. This model is simulated numerically with the fourth-order Runge-Kutta method in a self-consistent way. Different kinds of injection currents such as a disk-contact and a ring-contact of injection current with different current parameters are employed in the investigations. The dependencies of the transverse mode competition on the current intensity, the current spread, and the geometrical parameters of the injection contact forms are thoroughly investigated and analyzed. The results are useful to design and control the transverse modal profile of a VCSEL.
Keywords :
Runge-Kutta methods; laser beams; laser modes; optical hole burning; semiconductor device models; surface emitting lasers; VCSEL; active region cross section; carrier density profile; current intensity; current spread; disk-contact; fourth-order Runge-Kutta method; injection currents; potential transverse modes; ring-contact; spatial hole burning; spatially dependent rate equations; spatially independent model; transverse modal structure; transverse mode competition; Communication system control; Equations; Laser modes; Numerical models; Numerical simulation; Optical fiber communication; Optical modulation; Ring lasers; Surface emitting lasers; Vertical cavity surface emitting lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
DOI :
10.1109/JQE.2003.820842
