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
DOIAbstract
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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