Dynamics of stimulated emission in InAs quantum dot laser structures measured in pump-probe experiments

被引：0
|
作者：
Tartakovskii, AI [1 ]
Groom, KM [1 ]
Adawi, AM [1 ]
Lemaître, A [1 ]
Mowbray, DJ [1 ]
Skolnick, MS [1 ]
Hopkinson, M [1 ]
机构：
[1] Univ Sheffield, Dept Phys & Astron, Sheffield S3 7RH, S Yorkshire, England
来源：
ULTRAFAST PHENOMENA IN SEMICONDUCTORS AND NANOSTRUCTURE MATERIALS VIII | 2004年 / 5352卷
关键词：
quantum dot lasers; carrier dynamics; ultra-fast techniques;
D O I：
10.1117/12.527694
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Non-linear carrier-photon dynamics are studied for optically pumped InAs quantum dot (QD) laser structures, using excitation into the GaAs barrier by two degenerate pump and probe laser pulses. The non-linear emission from QDs excited by the pump pulse is further amplified by the probe excitation. By varying the delay between the two pulses a very fast decay of the QD excited state emission is measured. Notably slower dynamics for the QD ground state are observed, governed by state filling phenomena, which result in gain saturation.
引用
收藏
页码：348 / 354
页数：7
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