Coulomb-modulated gain spectra in current-injection T-shaped quantum-wire lasers

被引：3
|
作者：
Okano, Makoto [1 ,2 ]
Yoshita, Masahiro [1 ]
Akiyama, Hidefumi [1 ]
Huai, Ping [3 ]
Ogawa, Tetsuo [4 ]
Pfeiffer, Loren N. [5 ]
West, Ken W. [5 ]
机构：
[1] Univ Tokyo, Inst Solid State Phys, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778581, Japan
[2] Kyoto Univ, Inst Chem Res, Kyoto 6110011, Japan
[3] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[4] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan
[5] Princeton Univ, Princeton, NJ 08540 USA
来源：
PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 8, NO 1 | 2011年 / 8卷 / 01期
基金：
日本学术振兴会;
关键词：
quantum wire; semiconductor laser; optical gain; charge imbalance; SUPPRESSION; DEPENDENCE; ABSORPTION;
D O I：
10.1002/pssc.201000654
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We measured gain spectra of highly uniform current-injection T-shaped quantum wire lasers and investigated the physics of gain-spectral-shape modulation due to strong Coulomb interactions by comparing current-injection and optical-pumping measurements and additional calculations including screened Coulomb interaction. We found remarkable features for current injection : redshifts and long high-and low-energy tails of the gain peak. These characteristic current-injection features were ascribed to band-gap renormalization, state-filling, and carrier-carrier scattering inherent to charge-imbalanced electron-hole systems. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：20 / 23
页数：4
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