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Comparison of Lasing Characteristics of GaInNAs Quantum Dot Lasers and GaInNAs Quantum Well Lasers

Published online by Cambridge University Press:  01 February 2011

Chongyang Y. Liu ,
Soon Fatt Yoon  and
Zhongzhe Z. Sun
Chongyang Y. Liu
Affiliation:
LIUCY@NTU.EDU.SG, Nanyang Technological University, School of Electrical and Electronic Engineering, S1-B2C-20,, Nanyang Avenue, Singapore, Singapore, Singapore, 639798, Singapore
Soon Fatt Yoon
Affiliation:
esfyoon@ntu.edu.sg, Nanyang Technological University, School of Electrical and Electronic Engineering, Singapore
Zhongzhe Z. Sun
Affiliation:
ezzsun.assoc@ntu.edu.sg, Nanyang Technological University, School of Electrical and Electronic Engineering, Singapore
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Abstract

Self-assembled GaInNAs/GaAsN single layer quantum dot (QD) lasers grown using solid source molecular beam epitaxy have been fabricated and characterized. Temperature-dependent measurements have been carried out on the GaInNAs QD lasers. High-temperature operation up to 65°C was demonstrated from an unbonded GaInNAs QD laser (50 × 1060 μm2), with high characteristic temperature (T0) of 79.4 K in the temperature range of 10-60°C. For comparison, temperature-dependent operation has also been studied on the GaInNAs single quantum well (SQW) lasers. Unlike the relation between the cavity length and T0 in GaInNAs SQW lasers, longer-cavity GaInNAs QD laser (50 × 1700 μm2) showed lower T0 of 65.1 K, which is presumably believed due to the nonuniformity of the GaInNAs QD layer.

Keywords

nitridelaserdevices
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 891: Symposium EE – Progress in Semiconductor Materials V – Novel Materials and Electronics and Optoelectronic Applications , 2005 , 0891-EE10-31
Copyright
Copyright © Materials Research Society 2006

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