High output power THz quantum cascade lasers and their temperature dependent performance
Received:December 07, 2017  Revised:April 26, 2018  download
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Author NameAffiliationE-mail
LIN Tsung-Tse Center for Advanced Photonics, RIKEN ttlin@riken.jp 
WANG Ke RIKEN  
WANG Li   
HIRAYAMA Hideki RIKEN  
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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Copyright:《Journal of Infrared And Millimeter Waves》