| 共振声子太赫兹量子级联激光器研究 |
| |
| 引用本文： | 曹俊诚,黎华,吕京涛.共振声子太赫兹量子级联激光器研究[J].物理学进展,2011,31(1):22-45. |
| |
| 作者姓名： | 曹俊诚 黎华 吕京涛 |
| |
| 作者单位： | 中国科学院太赫兹固态技术重点实验室,中国科学院上海微系统与信息技术研究所,上海,200050 |
| |
| 基金项目： | the support from the Alexander von Humboldt Foundation; supported by the National Basic Research Program of China(Grant No.2007CB310402); the 863 program of China; the National Natural Science Foundation of China(Grant No.60721004); the major projects(Project Nos.KGCX1-YW-24 and KGCX2-YW-231); the Hundred Talent Program of the Chinese Academy of Sciences; the Shanghai Municipal Commission of Science and Technology(Project No.10JC1417000) |
| |
| 摘 要： | 本文综述了共振声子太赫兹(THz)量子级联激光器(QCL)载流子输运及其光电特性的研究结果。我们采用Monte Carlo方法模拟了不同有源区结构的共振声子THz QCL,如四阱有源区和三阱有源区结构等,优化了THz QCL的器件参数。计算表明,器件的增益依赖于注入势垒的宽度、掺杂浓度和声子抽运能级间隔等参数。单阱注入的THz QCL可以获得低的激射频率,而三阱有源区结构的THz QCL具有更高的工作温度。我们数值模拟了这两种器件结构在不同寄生电压下的电子输运、增益以及温度特性等。同时,我们实验测量了THz QCL的发射谱偏压和温度效应,计算结果与实验相吻合。研究结果表明,随着偏压增加发射谱出现了明显的频率蓝移,多模激射仅出现在大电流注入情形。与偏压的密切依赖关系不同,激射频率对温度的变化并不敏感。
|
| 关 键 词： | 太赫兹量子级联激光器，共振声子 蒙特卡洛模拟，发射谱测量，增益 |
Study of Resonant-Phonon Terahertz Quantum-Cascade Lasers |
| |
| Cao Jun-cheng,Li Hua,Lü Jing-tao.Study of Resonant-Phonon Terahertz Quantum-Cascade Lasers[J].Progress In Physics,2011,31(1):22-45. |
| |
| Authors: | Cao Jun-cheng Li Hua Lü Jing-tao |
| |
| Institution: | Cao Jun-cheng,Li Hua,and Lü Jing-taoKey Laboratory of Terahertz Solid-State Technology,Shanghai Institute of Microsystem and Information Technology,Chinese Academy of Sciences,865 Changning Road,Shanghai 200050 |
| |
| Abstract: | We give a brief review of researches on carrier transport and output characteristics of resonant-phonon terahertz(THz) quantum-cascade lasers(QCLs).Different active region designs,i.e.,four-well active module,three-well active module,and GaN-based module,are considered.By using the Monte Carlo method,we optimize the device parameters of resonant-phonon THz QCLs.The results show that the calculated gain is more sensitive to the injection barrier width,the doping concentration,and the phonon extraction level ... |
| |
| Keywords: | terahertz quantum-cascade lasers resonant-phonon Monte Carlo simulation emission spectra measurement gain |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《物理学进展》浏览原始摘要信息 |
| 点击此处可从《物理学进展》下载免费的PDF全文 |
|
