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Tuning of the Spectral Characteristics of Terahertz Quantum-Cascade Lasers

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Abstract

Terahertz quantum-cascade lasers (THz QCLs) are promising radiation sources for high-resolution gas spectroscopy. A wide operating-frequency band (from 1.2 to 5.4 THz), a narrow generation line (up to 10 kHz), the ability to operate on several radiative transitions (two-color lasers, generation of frequency combs) and other unique characteristics of THz QCLs make it possible to create gas spectrometers of a new generation for biomedical and environmental applications. In this paper, we consider the possibility of controlling the spectral characteristics of THz QCLs by changing the operating temperature and injection-current pulse parameters: amplitude, duration, and repetition rate. The energy transfer between longitudinal Fabry–Perot modes in THz QCLs is studied for the first time with a change in the duty cycle of the injection-current pulse cycle.

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Funding

This work was supported by the Russian Foundation for Basic Research, grant 20-02-00362 and within the framework of the State Assignment of Mokerov Institute of Ultra High Frequency Semiconductor Electronics, Russian Academy of Sciences.

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Authors and Affiliations

  1. Mokerov Institute of Ultra High Frequency Semiconductor Electronics, Russian Academy of Sciences, 117105, Moscow, Russia

    R. A. Khabibullin, S. S. Pushkarev, R. R. Galiev & N. V. Shchavruk

  2. Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 125009, Moscow, Russia

    I. N. Dyuzhikov, V. V. Pavlovskiy & O. Yu. Volkov

Authors
  1. R. A. Khabibullin
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  2. S. S. Pushkarev
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  3. R. R. Galiev
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  4. N. V. Shchavruk
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  5. I. N. Dyuzhikov
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  6. V. V. Pavlovskiy
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  7. O. Yu. Volkov
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Corresponding authors

Correspondence to R. A. Khabibullin or S. S. Pushkarev.

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We declare that we have no conflicts of interest.

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Translated by V. Selikhanovich

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Khabibullin, R.A., Pushkarev, S.S., Galiev, R.R. et al. Tuning of the Spectral Characteristics of Terahertz Quantum-Cascade Lasers. Nanotechnol Russia 17 (Suppl 1), S35–S40 (2022). https://doi.org/10.1134/S2635167622070102

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  • DOI: https://doi.org/10.1134/S2635167622070102

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