Development of practical theoretical calculation of semiconductor-laser gain including many-body Coulomb interactions and its experimental verifications with high-quality quantum-wire lasers

开发包括多体库仑相互作用在内的半导体激光增益实用理论计算及其使用高质量量子线激光器的实验验证

• 批准号: 23360135
• 负责人: AKIYAMA Hidefumi
• 金额: $ 12.65万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23360135/
• 关键词: 量子細線; 半導体レーザー; 光学利得; 多体効果; 理論計算; 薄膜・量子構造; レーザー; MBE; へき開再成長

Optical gain in semiconductor lasers has practically been calculated with band theories based on free electron approximations. In this study, we introduced mean-field approximations for many-body Coulomb interactions among carriers in two-dimensional quantum well system and one-dimensional quantum wire system. We developed practical calculation codes, and quantitatively calculated mode gain of the lasers by determining calculation parameters on the basis of the k-p perturbation theory. We also developed simplified calculation method by neglecting the wave-number dependence of screening for the Coulomb interactions. In the experiments, we precisely measured carrier density dependence of the gain spectrum in a 3 period T-shaped quantum-wire-laser sample with high quality. By comparing the peak gain values and quantitative gain spectra obtained with the theories and experiments, we verified the usefulness of the developed theories.

半导体激光器的光学增益是用基于自由电子近似的能带理论进行实际计算的。在本研究中，我们引入了平均场近似方法来研究二维量子阱系统和一维量子线系统中载流子间的多体库仑相互作用。根据k-p微扰理论，通过确定计算参数，编制了实用计算程序，定量计算了激光器的模式增益。我们还发展了忽略屏蔽对库仑相互作用的波数依赖性的简化计算方法。在实验中，我们精确地测量了一个高质量的三周期T型量子线激光器样品的增益谱随载流子密度的变化。通过理论和实验结果的比较，验证了理论的有效性。

项目成果

Biexciton emission from single isoelectronic traps formed by nitrogen-nitrogen pairs in GaAs

GaAs 中氮-氮对形成的单等电子陷阱的双激子发射

• DOI: 10.1063/1.4848523
• 发表时间: 2013
• 期刊: THE PHYSICS OF SEMICONDUCTORS: Proceedings of the 31st International Conference on the Physics of Semiconductors (ICPS) 2012
• 作者: Kengo Takamiya;Toshiyuki Fukushima;Shuhei Yagi;Yasuto Hijikata;Toshimitsu Mochizuki;Masahiro Yoshita;Hidefumi Akiyama;Shigeyuki Kuboya;Kentaro Onabe;Ryuji Katayama;Hiroyuki Yaguchi
• 通讯作者: Hiroyuki Yaguchi

窒素δドープGaAs中の窒素原子対が形成する単一の等電子トラップからの発光に対する一軸応力の影響

单轴应力对氮 δ 掺杂 GaAs 中氮原子对形成的单个等电子陷阱发射的影响

• 发表时间: 2012
• 作者: 新井佑也;星野真也;高宮健吾;八木修平;土方泰斗;望月敏光;吉田正裕;秋山英文;窪谷茂幸;尾鍋研太郎;矢口裕之
• 通讯作者: 矢口裕之

GaAs T型量子細線における励起子の高Rydberg状態の観測

GaAs T型量子线中激子高里德伯态的观察

• 发表时间: 2011
• 作者: 岡野真人;吉田正裕;陳少強;望月敏光;秋山英文;金光義彦;Loren Pfeiffer;Ken West
• 通讯作者: Ken West

Spectroscopic Study of Firefly Oxyluciferin in Enzymatic Environment on the Basis of Stability Monitoring

基于稳定性监测的酶环境下萤火虫氧化荧光素的光谱研究

• DOI: 10.1021/jp411476p
• 发表时间: 2014
• 期刊: J. Phys. Chem
• 作者: Yu Wang;Yuhei Hayamizu;Hidefumi Akiyama
• 通讯作者: Hidefumi Akiyama

リッジ型光励起量子井戸レーザーにおけるレーザー発振特性と利得の定量的評価

脊型光泵浦量子阱激光器激光振荡特性和增益的定量评估

• 发表时间: 2011
• 作者: Ishikawa K.;Maejima K.;Nagashima S.;Sawamura N.;Takinami Y.;Komatsu K.;Hashimoto M.;Yamaji Y.;Yamamoto J.;Namba S.;伊藤隆
• 通讯作者: 伊藤隆