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Single-frequency generation of a terahertz quantum-cascade laser with distributed feedback near 4.11 THz
Russian version
Vinokurov M.V.1, Belov D. A.1,2, Ikonnikov A. V.2, Maytama M. V.1, Glinskiy I. A.1, Rykov I. E.1, Galiev R. R.3, Pavlov A. Y.3, Ponomarev D. S.1,3, Afonenko A. A.4, Ushakov D. V.4, Zubov F. I.1,5, Khabibullin R. A. 1,3
1Moscow Institute of Physics and Technology (National Research University), Dolgoprudny, Moscow Region, Russia
2Lomonosov Moscow State University, Moscow, Russia
3National Research Center “Kurchatov Institute”, Moscow, Russia
4Belarusian State University, Minsk, Republic of Belarus
5Alferov University, St.Petersburg, Russia
Email: ponomarev_dmitr@mail.ru, vinokurov.mv@phystech.edu, khabibullin.ra@mipt.ru
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Single-frequency generation of a terahertz quantum-cascade laser (THz QCL) with an active region based on GaAs/AlGaAs has been achieved through the formation of a 1st-order distributed feedback (DFB) grating. The measured emission spectra of the THz QCL with DFB demonstrate single-frequency operation near 4.11 THz, which is in good agreement with the calculated target frequency. The DFB THz QCL operates in continuous-wave mode with an average power in the tens of μW at temperatures up to 70 K. Keywords: distributed feedback, terahertz lasers, spectrum, quantum-cascade laser, single-frequency generation, double-metal waveguide.
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