The effects of self-heating on mid-IR interband cascade lasers grown on InAs substrates
Received:August 30, 2018  Revised:May 24, 2019  download
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Author NameAffiliationE-mail
YU Cheng-Zhang Key Laboratory of Infrared Imaging Materials and Detector, Shanghai Institute of Technical Physics
Chinese Academy of Sciences, Shanghai 200083, China
University of Chinese Academy of Sciences, Beijing 100049, China
School of Physical Science and Technology, University of ShanghaiTech, Shanghai 201210, China 
yuchzh@shanghaitech.edu.cn 
XU Zhi-Cheng Key Laboratory of Infrared Imaging Materials and Detector, Shanghai Institute of Technical Physics
Chinese Academy of Sciences, Shanghai 200083, China 
 
CHEN Jian-Xin Key Laboratory of Infrared Imaging Materials and Detector, Shanghai Institute of Technical Physics
Chinese Academy of Sciences, Shanghai 200083, China 
jianxinchen@mail.sitp.ac.cn 
HE Li Key Laboratory of Infrared Imaging Materials and Detector, Shanghai Institute of Technical Physics
Chinese Academy of Sciences, Shanghai 200083, China 
 
Abstract:In this paper, InAs-based type-II interband cascade lasers operating at the mid-infrared range were fabricated and characterized. The maximum operating temperatures under pulsed and continuous wave (CW) operating mode were determined to be 275 K and 226 K, respectively. The threshold current density was around 17 A/cm2 at 80 K with an emission wavelength of approximate 3.8 μm. We analyzed the self-heating effects under CW mode and further simulated the temperature contour by the finite element method. The results indicate that the self-heating effect is a critical factor that limits the operating temperature under CW mode for our devices. Further optimization of the heat dissipation performance would be an effective way to raise the operating temperature of the devices.
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Copyright:《Journal of Infrared And Millimeter Waves》