Continuous-wave two-photon terahertz quantum cascade laser.

Autor: Khabibullin, R. A., Ushakov, D. V., Afonenko, A. A., Pavlov, A. Yu., Galiev, R. R., Ponomarev, D. S., Vasilyev, A. P., Kuzmenkov, A. G., Maleev, N. A., Zubov, F. I., Maksimov, M. V., Belov, D. A., Ikonnikov, A. V., Kuritsyn, D. I., Zhukavin, R. Kh., Kovalevsky, K. A., Anfertev, V. A., Vaks, V. L., Antonov, A. V., Dubinov, A. A.
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Zdroj: Journal of Applied Physics; 11/21/2024, Vol. 136 Issue 19, p1-10, 10p
Abstrakt: We report on the implementation of a terahertz two-photon quantum cascade laser operating in a continuous wave mode. Lasers that can emit two photons as a result of the relaxation of a single electron between two states of the same parity have been discussed since the early days of the laser era, but implementation has been hampered by the lack of a suitable gain medium. The semiconductor structure of a quantum cascade laser seems to be an ideal medium for realizing such two-photon emission. Our work demonstrates dual-band laser radiation in the range of 3.1–3.9 THz (104–130 cm−1) at temperatures up to 90 K. [ABSTRACT FROM AUTHOR]
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