K. A. Podgaetskii, A. V. Lobintsov, A. I. Danilov, A. V. Ivanov, M. A. Ladugin, A. A. Marmalyuk, E. V. Kuznetsov, V. V. Dyudelev, D. A. Mikhailov, D. V. Chistyakov, A. V. Babichev, E. A. Kognovitskaya, A. V. Lyutetskiy, S. O. Slipchenko, N. A. Pikhtin, A. G. Gladyshev, I. I. Novikov, L. Ya. Karachinsky, A. Yu. Egorov, G. S. Sokolovskii, “Metal–dielectric mirror coatings for 4–5-μm quantum-cascade lasers”, Kvantovaya Elektronika, 2023, Volume 53, Number 8,Pages <nobr>641

Lasers

Metal–dielectric mirror coatings for 4–5-μm quantum-cascade lasers

K. A. Podgaetskii^a, A. V. Lobintsov^a, A. I. Danilov^a, A. V. Ivanov^a, M. A. Ladugin^a, A. A. Marmalyuk^abc, E. V. Kuznetsov^a, V. V. Dyudelev^d, D. A. Mikhailov^d, D. V. Chistyakov^d, A. V. Babichev^ef, E. A. Kognovitskaya^d, A. V. Lyutetskiy^d, S. O. Slipchenko^d, N. A. Pikhtin^d, A. G. Gladyshev^e, I. I. Novikov^ef, L. Ya. Karachinsky^ef, A. Yu. Egorov^eg, G. S. Sokolovskii^d

^a Polyus Research and Development Institute named after M. F. Stel'makh, 117342, Moscow, Russia
^b Peoples' Friendship University of Russia named after Patrice Lumumba, 117198, Moscow, Russia
^c National Research Nuclear University MEPhI, 115409, Moscow, Russia
^d Ioffe Institute, Russian Academy of Sciences, 194021, St. Petersburg, Russia
^e Connector Optics LLC, 194292, St. Petersburg, Russia
^f ITMO University, 197101, St. Petersburg, Russia
^g Alferov St. Petersburg National Research Academic University of the Russian Academy of Sciences, 194021, St. Petersburg, Russia

Abstract: We report the results of a comparison of metal–dielectric mirror coatings for mid-IR quantum-cascade lasers (QCLs). Samples of QCLs with Al₂O₃/Ti/Au and SiO₂/Ti/Au optical coatings are fabricated and their characteristics are studied. It is shown that the use of metal–dielectric mirror coatings allows the output optical power of devices to be increased up to 93% and their threshold currents to be reduced by 1.25 times.

Keywords: quantum-cascade laser, highly reflective mirrors, output power, IR range.

Received: 13.07.2023