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Room-temperature high-speed mid-infrared quantum cascade laser with π-shape metal contact
  • +9
  • Xu Gao,
  • Ke Yang,
  • Yi-xuan Zhu,
  • Junqi Liu,
  • Shenqiang Zhai,
  • Shuman Liu,
  • Ning Zhuo,
  • Jinchuan Zhang,
  • Lijun Wang,
  • Fengqi Liu,
  • Xiao-hua Wang,
  • Zhi-peng Wei
Xu Gao
Changchun University of Science and Technology Jilin

Corresponding Author:2020200019@mails.cust.edu.cn

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Ke Yang
Institute of Semiconductors Chinese Academy of Sciences
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Yi-xuan Zhu
Institute of Semiconductors Chinese Academy of Sciences
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Junqi Liu
Institute of Semiconductors Chinese Academy of Sciences
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Shenqiang Zhai
Institute of Semiconductors Chinese Academy of Sciences
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Shuman Liu
Institute of Semiconductors Chinese Academy of Sciences
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Ning Zhuo
Institute of Semiconductors Chinese Academy of Sciences
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Jinchuan Zhang
Institute of Semiconductors Chinese Academy of Sciences
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Lijun Wang
Institute of Semiconductors Chinese Academy of Sciences
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Fengqi Liu
Institute of Semiconductors Chinese Academy of Sciences
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Xiao-hua Wang
Changchun University of Science and Technology Jilin
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Zhi-peng Wei
Changchun University of Science and Technology Jilin
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Abstract

We demonstrate a high-speed 8.5 μm quantum cascade laser with room temperature continuous wave operation. The maximum output power of 141 mW is obtained at 20 ℃. The parasitic capacitance of the device is decreased from 36.6 pF to 7.1 pF by monolithic integrating a π-shape metal contact electrode. This results in an increase in the -3 dB RF modulation bandwidth from 870 MHz to 4.5 GHz compared with the conventional electrode configuration.
11 Nov 2022Submitted to Electronics Letters
11 Nov 2022Submission Checks Completed
11 Nov 2022Assigned to Editor
15 Nov 2022Reviewer(s) Assigned
24 Nov 2022Review(s) Completed, Editorial Evaluation Pending
24 Nov 2022Editorial Decision: Revise Minor
08 Dec 20221st Revision Received
08 Dec 2022Submission Checks Completed
08 Dec 2022Assigned to Editor
08 Dec 2022Review(s) Completed, Editorial Evaluation Pending
08 Dec 2022Editorial Decision: Accept