標題: Formation of transverse modes with Y-junction structures in broad-area oxide-confined vertical-cavity surface-emitting laser
作者: Kou, RJ
Pan, CL
光電工程學系
Department of Photonics
關鍵字: y-junction;transverse mode;broad-area oxide-confined vertical surface-emitting laser;Laguerre-Gaussian mode
公開日期: 15-Jul-2003
摘要: We performed experimental and theoretical investigations on the transverse-mode emission behavior of a broad-area oxide-confined vertical-cavity surface-emitting laser (VCSEL). The far-field emission pattern with y-junction structures is observed in the VCSEL with a 20-mum-diameter aperture when the injection current is significantly above the thermal roll-over point. In order to provide a quantitative understanding of these emission characteristics, we present a numerical simulation to model and fit the experimental results. The numerical simulation adopts the high-order Laguerre-Gaussian mode due to the assumptions of a parabolic refractive-index profile and ring-shaped carrier distribution in the laser. From the numerical simulation results, the formation of y-junction structures is inferred to be caused by the superposition of two high-order Laguerre-Gaussian modes. The results of this numerical simulation are in good agreement with the experimental findings.
URI: http://dx.doi.org/10.1143/JJAP.42.L824
http://hdl.handle.net/11536/27711
ISSN: 0021-4922
DOI: 10.1143/JJAP.42.L824
期刊: JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS
Volume: 42
Issue: 7B
起始頁: L824
結束頁: L827
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