Nanomaterials (Nov 2022)

High-Power Quantum Cascade Lasers Emitting at 8 μm: Technology and Analysis

  • Evgeniia Cherotchenko,
  • Vladislav Dudelev,
  • Dmitry Mikhailov,
  • Grigorii Savchenko,
  • Dmitriy Chistyakov,
  • Sergey Losev,
  • Andrey Babichev,
  • Andrey Gladyshev,
  • Innokentiy Novikov,
  • Andrey Lutetskiy,
  • Dmitry Veselov,
  • Sergey Slipchenko,
  • Dmitry Denisov,
  • Andrey Andreev,
  • Irina Yarotskaya,
  • Konstantin Podgaetskiy,
  • Maksim Ladugin,
  • Aleksandr Marmalyuk,
  • Nikita Pikhtin,
  • Leonid Karachinsky,
  • Vladimir Kuchinskii,
  • Anton Egorov,
  • Grigorii Sokolovskii

DOI
https://doi.org/10.3390/nano12223971
Journal volume & issue
Vol. 12, no. 22
p. 3971

Abstract

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In this work, we demonstrate the features of a two-stage epitaxial growth technique and show the results of power and efficiency measurements for three different designs of quantum cascade lasers with a record-high peak power in the 8 μm spectral region. The time-resolved QCL spectral study proves that InP-based upper cladding paired with an InP contact layer provides better heat dissipation and allows one to reach better power characteristics in comparison with InGaAs-based contact, even with short pulse pumping.

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