Modeling of resistance characteristics of a continuously-graded distributed Bragg reflector in a 980-nm vertical-cavity surface-emitting laser

doi:10.1088/1674-1056/21/10/104207

Abstract The resistance characteristics of a continuously-graded distributed Bragg reflector (DBR) in a 980-nm vertical-cavity surface-emitting laser (VCSEL) are modeled in detail. The junction resistances between the layers of both the p- and n-DBR mirrors are analysed by combining the thermionic emission model and the finite difference method. In the meantime, the intrinsic resistance of the DBR material system is calculated to make a comparison with the junction resistance. The minimal values of series resistances of the graded p- and n-type DBR mirrors and the lateral temperature-dependent resistance variation are calculated and discussed. The result indicates the potential to optimize the design of the DBR reflectors of the 980-nm VCSELs.

Keywords: distributed Bragg reflector (DBR) resistance characteristics vertical-cavity surface-emitting lasers

Received: 07 March 2012
Revised: 18 April 2012
Accepted manuscript online:

PACS:	42.55.Px	(Semiconductor lasers; laser diodes)
	73.40.Kp	(III-V semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions)
	73.40.Cg	(Contact resistance, contact potential)

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 10974012).

Corresponding Authors: Wu Jian
E-mail: jwu2@buaa.edu.cn

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Huang Meng (黄梦), Wu Jian (吴坚), Cui Huai-Yang (崔怀洋), Qian Jian-Qiang (钱建强), Ning Yong-Qiang (宁永强) Modeling of resistance characteristics of a continuously-graded distributed Bragg reflector in a 980-nm vertical-cavity surface-emitting laser 2012 Chin. Phys. B 21 104207

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Modeling of resistance characteristics of a continuously-graded distributed Bragg reflector in a 980-nm vertical-cavity surface-emitting laser

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