V. V. Dyudelev, D. A. Mikhailov, A. V. Babichev, S. N. Losev, E. A. Kognovitskaya, A. V. Lyutetskiy, S. O. Slipchenko, N. A. Pikhtin, A. G. Gladyshev, D. V. Denisov, I. I. Novikov, L. Ya. Karachinsky, V. I. Kuchinskii, A. Yu. Egorov, G. S. Sokolovskii, “Spectral dynamics of quantum cascade lasers generating frequency combs in the long-wavelength infrared range”, Zhurnal Tekhnicheskoi Fiziki, 2020, Volume 90, Issue 8,Pages <nobr>1333

This article is cited in 2 papers

Photonics

Spectral dynamics of quantum cascade lasers generating frequency combs in the long-wavelength infrared range

V. V. Dyudelev^a, D. A. Mikhailov^a, A. V. Babichev^a, S. N. Losev^a, E. A. Kognovitskaya^ab, A. V. Lyutetskiy^a, S. O. Slipchenko^a, N. A. Pikhtin^a, A. G. Gladyshev^c, D. V. Denisov^b, I. I. Novikov^acd, L. Ya. Karachinsky^acd, V. I. Kuchinskii^a, A. Yu. Egorov^d, G. S. Sokolovskii^a

^a Ioffe Institute, St. Petersburg
^b Saint Petersburg Electrotechnical University "LETI"
^c Connector Optics LLC, St. Petersburg
^d St. Petersburg National Research University of Information Technologies, Mechanics and Optics

Abstract: We have studied the spectral and dynamic characteristics of quantum cascade lasers emitting in the long-wavelength infrared range. It is shown that lasers with a short cavity ($\sim$1 mm) make it possible to obtain frequency combs in a very wide spectral range. We have investigated the spectral dynamics in the frequency comb generation regime. It is demonstrated that the intensity of longitudinal laser modes varies during a pump pulse propagation. We have observed simultaneous generation of all longitudinal modes of a frequency comb over a pump pulse segment with a constant amplitude.

Keywords: quantum-cascade laser, frequency comb, time resolved spectrum, dynamics.

Received: 10.03.2020
Revised: 10.03.2020
Accepted: 11.03.2020

DOI: 10.21883/JTF.2020.08.49544.78-20