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Kvantovaya Elektronika, 2021, Volume 51, Number 2, Pages 164–168 (Mi qe17392)  

This article is cited in 2 scientific papers (total in 2 papers)

Generation of THz radiation

Simulation on the nonuniform electrical pumping efficiency of THz quantum-cascade lasers

A. K. Dolgova, D. V. Ushakovb, A. A. Afonenkob, I. N. Dyuzhikovc, I. A. Glinskiyd, D. S. Ponomareva, R. A. Khabibullinae

a V. G. Mokerov Institute of Ultra High Frequency Semiconductor Electronics of RAS, Moscow
b Belarusian State University, Minsk
c Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow
d MIREA — Russian Technological University, Moscow
e Institute for Physics of Microstructures, Russian Academy of Sciences, Nizhnii Novgorod
Full-text PDF (806 kB) Citations (2)
References:
Abstract: The efficiency of electric pumping of THz quantum-cascade lasers (QCLs) with strip geometry is studied depending on the number and position of contact pads. The numerical simulation of the electric potential distribution in the THz QCL active region is used to determine the required thicknesses of the upper metallisation layers of the THz QCLs to minimize the voltage drop along the laser structure in the case of nonuniform current supply. It is found that the efficiency of electric pumping in the case of a centrally located contact is significantly higher than when the contact pads are located near the laser structure edges. From the calculated dependence of the THz QCL integral power on the thickness of the upper metal layer, it is shown that for effective current injection, the contact pads must be located at a distance of less than 0.5 mm from each other.
Keywords: quantum-cascade lasers, THz range, electric pumping, active region.
Funding agency Grant number
Russian Science Foundation 18-19-00493
Received: 01.09.2020
English version:
Quantum Electronics, 2021, Volume 51, Issue 2, Pages 164–168
DOI: https://doi.org/10.1070/QEL17431
Bibliographic databases:
Document Type: Article
Language: Russian


Citation: A. K. Dolgov, D. V. Ushakov, A. A. Afonenko, I. N. Dyuzhikov, I. A. Glinskiy, D. S. Ponomarev, R. A. Khabibullin, “Simulation on the nonuniform electrical pumping efficiency of THz quantum-cascade lasers”, Kvantovaya Elektronika, 51:2 (2021), 164–168 [Quantum Electron., 51:2 (2021), 164–168]
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  • https://www.mathnet.ru/eng/qe17392
  • https://www.mathnet.ru/eng/qe/v51/i2/p164
  • This publication is cited in the following 2 articles:
    Citing articles in Google Scholar: Russian citations, English citations
    Related articles in Google Scholar: Russian articles, English articles
    Квантовая электроника Quantum Electronics
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    Abstract page:143
    Full-text PDF :12
    References:29
    First page:11
     
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