高输出功率太赫兹量子级联激光器与温度特性
投稿时间:2017-12-07  修订日期:2018-04-26  点此下载全文
引用本文:林宗澤,王科,王利,平山秀樹.高输出功率太赫兹量子级联激光器与温度特性[J].红外与毫米波学报,2018,37(5):513~517].LIN Tsung-Tse,WANG Ke,WANG Li,HIRAYAMA Hideki.High output power THz quantum cascade lasers and their temperature dependent performance[J].J.Infrared Millim.Waves,2018,37(5):513~517.]
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作者单位E-mail
林宗澤 日本国立研究開発法人理化学研究所光量子工程研究领域太赫兹量子器件研究室 ttlin@riken.jp 
王科 RIKEN  
王利   
平山秀樹 RIKEN  
中文摘要:半导体太赫兹量子级联激光器 (THz QCL) 是一种相干性好线宽窄的太赫兹辐射源, 有潜力获得高的输出功率.采用基于非平衡格林函数 (NEGF) 方法的计算工具设计、生长、制备了基于砷化镓系材料的THz QCL.在10 K温度下, 峰值功率达到270 mW, 平均功率为2. 4 mW, 单位面积的输出功率与已报道的最高值相当.采用NEGF方法对器件的温度变化特性做了详细的分析.
中文关键词:太赫兹 量子级联激光器 砷化镓
 
High output power THz quantum cascade lasers and their temperature dependent performance
Abstract:Quantum cascade lasers ( QCLs) are promising high output power semiconductor-based terahertz (THz) sources with narrowlinewidths and wide operating frequency. We have grown and fabricated THz-QCLs based on GaAs/AlGaAs superlattices under the guidance of a newly developed simulation tool based on the framework of Non-Equilibrium Green's Function ( NEGF) method. The latest THz-QCLs demonstrated 270 mW peak power and 2.4 mW average power at 10 K, which is comparable to the highest reported value but with a size of more than 4 times larger than ours. Temperature dependence of the device performance are analyzed through the detailed calculations by using the NEGF method.
keywords:terahertz, quantum  cascade lasers, GaAs
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