High-Power Quantum Cascade Lasers Emitting at 8 μm: Technology and Analysis
oleh: 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
| Format: | Article |
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| Diterbitkan: | MDPI AG 2022-11-01 |
Deskripsi
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 <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mi mathvariant="sans-serif">μ</mi></semantics></math></inline-formula>m 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.