Zobrazeno 1 - 10
of 28
pro vyhledávání: '"E. A. Kognovitskaya"'
Autor:
E. A. Kognovitskaya, G. M. Savchenko, A. V. Lyutetskii, D. V. Denisov, A. G. Gladyshev, S. N. Losev, Vladislav V. Dudelev, A. V. Babichev, L. Ya. Karachinsky, Grigorii S. Sokolovskii, I. I. Novikov, Sergey O. Slipchenko, Nikita A. Pikhtin, V. I. Kuchinskii, A. Yu. Egorov, D. A. Mikhailov
Publikováno v:
Quantum Electronics. 50:989-994
Quantum-cascade room-temperature 4.5 – 4.6 μm lasers with different numbers of quantum cascades are developed and studied. It is shown that losses at the metallised sidewalls of the ridge waveguide considerably increase the threshold current densi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fc177923bef596a1f02a58b7d610ef04
https://doi.org/10.1070/qel17396
https://doi.org/10.1070/qel17396
Autor:
Innokenty I. Novikov, V. Yu. Mylnikov, V. I. Kuchinskii, D. A. Mikhailov, Nikita A. Pikhtin, D. V. Denisov, A. Yu. Egorov, Sergey O. Slipchenko, Grigorii S. Sokolovskii, A. G. Gladyshev, E. A. Kognovitskaya, A. V. Babichev, L. Ya. Karachinsky, Vladislav V. Dudelev, A. V. Lyutetskii, S. N. Losev
Publikováno v:
Technical Physics Letters. 46:1152-1155
Near- and far-fields of quantum-cascade lasers emitting in the spectral range near 8 μm have been studied. For all laser samples with a ridge width of 20 and 50 μm, lasing on the fundamental waveguide mode with a divergence of ~50° was observed fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::702b496f7a30745b9785b5cc1ea4989d
https://doi.org/10.1134/s106378502011019x
https://doi.org/10.1134/s106378502011019x
Autor:
Nikita A. Pikhtin, D. V. Denisov, A. G. Gladyshev, D. A. Mikhailov, V. I. Kuchinskii, E. A. Kognovitskaya, A. V. Babichev, A. V. Lyutetskii, Vladislav V. Dudelev, Grigorii S. Sokolovskii, A. Yu. Egorov, Innokenty I. Novikov, L. Ya. Karachinsky, S. N. Losev, Sergey O. Slipchenko
Publikováno v:
Technical Physics. 65:1281-1284
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 (~1 mm) make it possible to obtain frequency combs in a very wide spectral
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcd782ef8ebcc6b5fdd470c416c1e134
https://doi.org/10.1134/s106378422008006x
https://doi.org/10.1134/s106378422008006x
Autor:
A. V. Babichev, A. S. Ionov, Aleksey D. Andreev, A. G. Gladyshev, Sergey O. Slipchenko, I. I. Novikov, L. Ya. Karachinskii, E. A. Kognovitskaya, A. V. Lyutetskiy, Grigorii S. Sokolovskii, D. V. Denisov, Nikita A. Pikhtin, A. Yu. Egorov, K. O. Voropaev, V. I. Kuchinskii, D. A. Mikhailov, Vladislav V. Dudelev
Publikováno v:
Quantum Electronics. 49:1158-1162
A technology of arrays of distributed-feedback semiconductor lasers for the spectral region of 1.55 μm and their characteristics are presented. Stable single-frequency lasing with a side mode suppression ratio higher than 25 dB is demonstrated. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa6588eab41c86c7349fb1bce53478d2
https://doi.org/10.1070/qel17130
https://doi.org/10.1070/qel17130
Autor:
E. D. Cherotchenko, V. V. Dudelev, D. A. Mikhailov, S. N. Losev, A. V. Babichev, A. G. Gladyshev, I. I. Novikov, A. V. Lutetskiy, D. A. Veselov, S. O. Slipchenko, N. A. Pikhtin, L. Ya. Karachinsky, D. V. Denisov, V. I. Kuchinskii, E. A. Kognovitskaya, A. Yu. Egorov, R. Teissier, A. N. Baranov, G. S. Sokolovskii
We present an experimental study of the turn-on delay in pulsed mid-infrared quantum cascade lasers. We report the unexpectedly long delay time depending on the pumping current, which does not agree with conventional theoretical predictions for step-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::388c6cce2230cce2760e4396d7c08f71
http://arxiv.org/abs/2106.13658
http://arxiv.org/abs/2106.13658
Autor:
E. A. Kognovitskaya, S. N. Losev, S. H. Abdulrazak, N. G. Deryagin, Vladislav V. Dudelev, Yu. M. Zadiranov, D. V. Chistyakov, V. Yu. Mylnikov, Grigorii S. Sokolovskii, V. I. Kuchinskii
Publikováno v:
Optics and Spectroscopy. 127:848-853
A method for generation of droplet quasi-Bessel beams using a conical lens with a rounded tip is demonstrated. The study of the longitudinal distribution of the intensity of the obtained quasi-Bessel beam showed that, due to the interference of two w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28b2ed69ded3038fa9e45dcc2978c367
https://doi.org/10.1134/s0030400x19110079
https://doi.org/10.1134/s0030400x19110079
Autor:
D. A. Mikhailov, E. A. Kognovitskaya, Grigorii S. Sokolovskii, A. V. Lyutetskii, D. D. Avrov, Sergey O. Slipchenko, S. N. Losev, D. V. Chistyakov, A. G. Gladyshev, Nikita A. Pikhtin, V. I. Kuchinskii, Vladislav V. Dudelev, A. Yu. Egorov, L. Ya. Karachinsky, A. V. Babichev, Innokenty I. Novikov
Publikováno v:
Technical Physics Letters. 45:1027-1030
We have studied the generation of frequency combs by quantum cascade lasers (QCLs) emitting in the 8-μm wavelength range. Results showed the presence of a self-pulsation regime near the lasing threshold. Further increase in the pumping current led t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6897002a54905859809fc70ad98e5223
https://doi.org/10.1134/s1063785019100201
https://doi.org/10.1134/s1063785019100201
Autor:
A. G. Gladyshev, Sergey O. Slipchenko, Grigorii S. Sokolovskii, Alexei N. Baranov, A. V. Babichev, Nikita A. Pikhtin, Anton Yu. Egorov, Leonid Ya. Karachinsky, S. N. Losev, Andrey V. Lutetskiy, I. I. Novikov, Dmitry A. Veselov, Evgenia D. Cherotchenko, E. A. Kognovitskaya, V. I. Kuchinskii, Vladislav V. Dudelev, D. V. Denisov, Roland Teissier, Dmitry A. Mikhailov
Publikováno v:
Conference on Lasers and Electro-Optics.
Turn-on delay is measured to be much longer and its pump-current dependence different from theoretical predictions for mid-infrared InP- and InAs-based quantum-cascade lasers. Experiment qualitatively agrees with numerical simulations of rate-equatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8437e9b2c79eaa66e4c9c95a22b5ddbb
https://doi.org/10.1364/cleo_at.2021.atu1t.1
https://doi.org/10.1364/cleo_at.2021.atu1t.1
Autor:
Vladislav V. Dudelev, A. G. Gladyshev, A. V. Lyutetskiy, L. Ya. Karachinsky, V. Yu. Mylnikov, Nikita A. Pikhtin, S. N. Losev, A. V. Babichev, V. I. Kuchinskii, A. Yu. Egorov, Grigorii S. Sokolovskii, Sergey O. Slipchenko, Innokenty I. Novikov, E. A. Kognovitskaya
Publikováno v:
Physics of the Solid State. 60:2291-2294
—In this paper, we present studies of the characteristics of quantum-cascade lasers with a generation wavelength in the region of 8 μm at high temperatures of up to + 65°C. The characteristic temperatures of the temperature dependences of the thr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::38b88e9d6ac49697fe043514381b7550
https://doi.org/10.1134/s1063783418110057
https://doi.org/10.1134/s1063783418110057
Autor:
Sergey O. Slipchenko, K. O. Voropaev, A. V. Babichev, Grigorii S. Sokolovskii, D. A. Mikhailov, Nikita A. Pikhtin, I. I. Novikov, A. G. Gladyshev, A. S. Ionov, L. Ya. Karachinskii, A. Yu. Egorov, D. V. Chistyakov, D. V. Denisov, A. V. Lyutetskiy, E. A. Kognovitskaya, V. I. Kuchinskii, Vladislav V. Dudelev
Publikováno v:
Quantum Electronics. 49:801-803
A technique for the development of high-coupling distributed-feedback (DFB) lasers for the 1.55 μm spectral region is described. The lasers demonstrate stable single-frequency generation in a broad temperature range with a maximum side-mode suppress
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::204c33aad2c482cde235a1204aa3fe31
https://doi.org/10.1070/qel17101
https://doi.org/10.1070/qel17101