Optical bistability in a two-section InAs quantum-dot laser

Room temperature,continuous-wave bistable operation is achieved in two-section 1.24μm InAs quantum-dot （QD） lasers with integrated intracavity QD saturable absorbers（SA）.It is found that the hysteresis width is narrowed with increasing reverse bias voltage,and broadened with increasing length of sat...

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Bibliographic Details
Published in:Journal of semiconductors 2010-11, Vol.31 (11), p.55-57
Main Authors: Jiang, Liwen, Ye, Xiaoling, Zhou, Xiaolong, Jin, Peng, Lü, Xueqin, Wang, Zhanguo
Format: Article
Language:English
Subjects:
InAs量子点
偏置电压
光学双稳态
电流模型
稳态操作
量子点激光器
饱和吸收体
饱和吸收器
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Summary:Room temperature,continuous-wave bistable operation is achieved in two-section 1.24μm InAs quantum-dot （QD） lasers with integrated intracavity QD saturable absorbers（SA）.It is found that the hysteresis width is narrowed with increasing reverse bias voltage,and broadened with increasing length of saturable absorber.This can be explained by the competition between QD absorption and electroabsorption in the SA section.In addition,a larger hysteresis width is realized than other reports so far,which can be attributed to a greater number of stacked layers of active region in our case.The experimental results can be explained by a modified threshold current model.
ISSN:1674-4926
DOI:10.1088/1674-4926/31/11/114012