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High Temperature Laser Generation of Quantum-Cascade Lasers in the Spectral Region of 8 μm

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Abstract—In this paper, we present studies of the characteristics of quantum-cascade lasers with a generation wavelength in the region of 8 μm at high temperatures of up to + 65°C. The characteristic temperatures of the temperature dependences of the threshold current and the differential efficiency are determined. Spectral studies showed the presence of two generation lines with a short wavelength of ~7800 nm and a long-wave wavelength of ~8100 nm. The observed competition between the short-wave and long-wave generation lines leads to a nonmonotonic character of the dependence of the radiation intensity on the pump current.

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ACKNOWLEDGMENTS

This work was supported by the Ministry of Education and Science of the Russian Federation, project no. RFMEFI61617X0074.

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Authors and Affiliations

  1. Ioffe Institute, 194021, St. Petersburg, Russia

    V. V. Dudelev, S. N. Losev, V. Yu. Mylnikov, A. V. Babichev, S. O. Slipchenko, A.V. Lyutetskiy, N. A. Pikhtin, V. I. Kuchinskii & G. S. Sokolovskii

  2. ITMO University, 197101, St. Petersburg, Russia

    V. V. Dudelev, L. Ya. Karachinsky, I. I. Novikov, A. Yu. Egorov & G. S. Sokolovskii

  3. Saint Petersburg Electrotechnical University “LETI,”, 197022, St. Petersburg, Russia

    E. A. Kognovitskaya

  4. Connector Optics LLC, 194292, St. Petersburg, Russia

    A. G. Gladyshev, L. Ya. Karachinsky & I. I. Novikov

Authors
  1. V. V. Dudelev
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  2. S. N. Losev
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  3. V. Yu. Mylnikov
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  4. A. V. Babichev
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  5. E. A. Kognovitskaya
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  6. S. O. Slipchenko
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  7. A.V. Lyutetskiy
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  8. N. A. Pikhtin
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  9. A. G. Gladyshev
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  10. L. Ya. Karachinsky
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  11. I. I. Novikov
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  12. A. Yu. Egorov
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  13. V. I. Kuchinskii
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  14. G. S. Sokolovskii
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Corresponding author

Correspondence to G. S. Sokolovskii.

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Translated by A. Ivanov

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Dudelev, V.V., Losev, S.N., Mylnikov, V.Y. et al. High Temperature Laser Generation of Quantum-Cascade Lasers in the Spectral Region of 8 μm. Phys. Solid State 60, 2291–2294 (2018). https://doi.org/10.1134/S1063783418110057

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  • DOI: https://doi.org/10.1134/S1063783418110057

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