High-power quantum cascade lasers for 8 μm spectral range

V. V. Dudelev; E. D. Cherotchenko; I. I. Vrubel; D. A, Mikhailov; D. V. Chistyakov; V. Yu. Mylnikov; S. N. Losev; A. V. Lutetskiy; S. O. Slipchenko; A. G. Gladyshev; K. A. Podgaetskiy; A. V. Babichev; D. S. Papylev; A. Yu. Andreev; I. V. Yarotskaya; M. A. Ladugin; A. A. Marmalyuk; I. I. Novikov; V. I. Kuchinskii; L. Ya. Karachinsky; N. A. Pikhtin; A. Yu. Egorov; G. S. Sokolovskii

doi:10.1117/12.3022397

20 June 2024 High-power quantum cascade lasers for 8 μm spectral range

V. V. Dudelev, E. D. Cherotchenko, I. I. Vrubel, D. A, Mikhailov, D. V. Chistyakov, V. Yu. Mylnikov, S. N. Losev, A. V. Lutetskiy, S. O. Slipchenko, A. G. Gladyshev, K. A. Podgaetskiy, A. V. Babichev, D. S. Papylev, A. Yu. Andreev, I. V. Yarotskaya, M. A. Ladugin, A. A. Marmalyuk, I. I. Novikov, V. I. Kuchinskii, L. Ya. Karachinsky, N. A. Pikhtin, A. Yu. Egorov, G. S. Sokolovskii

Author Affiliations +

Proceedings Volume 13002, Semiconductor Lasers and Laser Dynamics XI; 130020E (2024) https://doi.org/10.1117/12.3022397
Event: SPIE Photonics Europe, 2024, Strasbourg, France

Abstract

We present a study of high-power quantum-cascade lasers (QCL) for 8 μm spectral range with active regions of latticematched to InP substrate and strain-balanced designs. The use of the strained quantum well/barrier pairs made it possible to increase the energy barrier between the upper laser level and continuum by ~ 200 meV. Our experiments show that utilization of the strain-balanced design of the active region makes it possible to more than double the characteristic temperature T₀ to 253 K from 125 K for the lattice-matched design. In pulsed mode, QCLs with strain-balanced active region demonstrated high efficiency of 12% and high output optical power of 21 W (over 10 W per facet). This is the highest value of the optical power demonstrated to date in 8 μm spectral region to the best of our knowledge.

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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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V. V. Dudelev, E. D. Cherotchenko, I. I. Vrubel, D. A, Mikhailov, D. V. Chistyakov, V. Yu. Mylnikov, S. N. Losev, A. V. Lutetskiy, S. O. Slipchenko, A. G. Gladyshev, K. A. Podgaetskiy, A. V. Babichev, D. S. Papylev, A. Yu. Andreev, I. V. Yarotskaya, M. A. Ladugin, A. A. Marmalyuk, I. I. Novikov, V. I. Kuchinskii, L. Ya. Karachinsky, N. A. Pikhtin, A. Yu. Egorov, and G. S. Sokolovskii "High-power quantum cascade lasers for 8 μm spectral range", Proc. SPIE 13002, Semiconductor Lasers and Laser Dynamics XI, 130020E (20 June 2024); https://doi.org/10.1117/12.3022397

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KEYWORDS

Quantum cascade lasers

High power lasers

Chemical vapor deposition

Cladding

Coating

Epitaxy

Heterojunctions

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