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Experimental investigation of the far-field emission pattern of microdisk laser modes
P. 012094-1–012094-5.
We studied a far-field emission pattern for microlasers with InGaAs/GaAs quantum
well-dots in the active region. Angular-resolved electroluminescence spectra measurement
revealed various far-field patterns depending on current and resonance mode.
Publication based on the results of:
In book
Vol. 1695: 7th International School and Conference "Saint Petersburg OPEN 2020": Optoelectronics, Photonics, Engineering and Nanostructures April 27-30, 2020, Saint Petersburg, Russian Federation. , Bristol: Institute of Physics Publishing (IOP), 2020.
Бабичев А. В., Makhov I., Kryzhanovskaya N. et al., Письма в Журнал технической физики 2025 № 21 С. 58–62
Продемонстрирована генерация в микролазерах на основе вертикального микрорезонатора при температуре 244 K. Пороговая поглощенная оптическая мощность, длина волны генерации и добротность микролазера с диаметром 4 µm составили ∼ 2.8 mW, 989 nm и 12 000 соответственно. Минимальная пороговая поглощенная оптическая мощность (250 µW) соответствует температуре 168 K. ...
Added: March 13, 2026
Babichev A., Blokhin A., Zadiranov Y. et al., Applied Physics Letters 2026 Vol. 128 No. 5 Article 051105
High-quality micropillar cavities were grown using molecular-beam epitaxy. Stable continuous-wave lasing at room temperature was demonstrated for microlasers with semiconductor and hybrid output mirrors. At 300 K, single-mode lasing was demonstrated for micropillars with a diameter of 5 um at a wavelength of 960 nm, with a minimum lasing threshold of 1.2 mW and the ...
Added: March 13, 2026
Зубов Ф. И., Шерняков Ю. М., Бекман А. А. et al., Письма в Журнал технической физики 2024 Т. 50 № 6 С. 23–27
Исследованы ватт-амперные характеристики полудисковых микролазеров c активной областью на основе квантовых яма-точек InGaAs/GaAs, излучающих на длине волны 1090 nm. Приборы изготовлены путем скалывания дисковых резонаторов диаметром 200 µm с шириной кольцевого контакта 10 µm. В режиме непрерывной накачки максимальная выходная мощность при 20◦C составила 110 mW, а лазерная генерация наблюдалась до 113◦C ...
Added: February 25, 2025
Kovaleva N. N., Chvostova D., Muratov A. V. et al., Applied Physics Letters 2024 Vol. 125 No. 26 Article 262404
The intrinsic antisite defects, which cause doping in the antiferromagnetic topological insulators of the MnTe .n Bi2Te3 (n =1, 2, 3, …,) family, prevent the exploration of the Dirac states affecting the Fermi level (E_F ) position and magnetic properties. In the present study, the MnTe . Bi(2-x)Te3(1-x/2) films grown by the MBE technique onto Si(111) substrates ...
Added: December 29, 2024
Kovaleva N. N., Kusmartseva O. E., Kugel K., Journal of Physics: Conference Series 2024 Vol. 2769 Article 012013
Transition metal oxides incorporating Jahn-Teller (JT) ions Mn3+ (3d4) in manganites and Cu2+ (3d9) in cuprates exhibit outstanding magnetic and electronic properties, including colossal magnetoresistance (CMR) and high-temperature superconductivity (HTSC). The physics of these compounds is associated with the orbitally-degenerate electronic states of JT ions, leading to the linear electron-lattice interaction, complemented by the entirely electronic
superexchange (SE) interaction. Here, ...
Added: December 29, 2024
Fedor Zubov, Moiseev E., Mikhail Maximov et al., Photonics 2023 Vol. 10 No. 3 Article 290
We report on half-ring lasers that are 100–200 um in diameter and are fabricated by cleaving
the initial full rings into halves. Characteristics of the half-ring and half-disk lasers fabricated from the
same wafer are compared. The active area of the microlasers is based on the quantum heterostructures
of mixed (0D/2D) dimensionality, referred to as quantum well-dots with ...
Added: June 27, 2023
Fedor I. Zubov, Eduard I. Moiseev, Mikhail V. Maximov et al., IEEE Photonics Technology Letters 2022 Vol. 34 No. 24 P. 1349–1352
We report on the fabrication and studies of
Ø100 μm half-disk lasers with an active region based on
InGaAs/GaAs quantum dots providing very high modal gain.
Such resonators support whispering gallery modes propagating
at the cavity periphery. The microlasers show directional light
outcoupling: continuous-wave output power emitted from the
flat side reaches 17 mW, which is about 7 times greater than
the ...
Added: December 13, 2022
Kulakovskii V., Maksimov A. A., Filatov E. V. et al., Physical Review Applied 2022 Vol. 17 P. 1–6
Engineering the chirality of optical microcavities is a central concept of modern photonics to gain full
control the polarization of the confined electromagnetic mode. Here, we demonstrate a compact source of
coherent radiation based on an electrically driven, chiral semiconductor microcavity. The device is composed
of an AlAs/(Al,Ga)As microcavity containing multiple GaAs quantum wells in the active region
and ...
Added: November 14, 2022
Белоновский А., Позина Г., Левицкий Я. et al., Физика и техника полупроводников 2020 Т. 54 № 1 С. 85–88
Методом селективной газофазной эпитаксии выращены плоские микрорезонаторы GaN гексагональной формы. Проводилось измерение спектров низкотемпературной катодолюминесценции на сканирующем электронном микроскопе. В полученных спектрах видно огромное расщепление Раби (~100 мэВ). Выполнено численное моделирование распределения интенсивности мод резонатора гексагональной формы. Некоторые моды могут иметь сильную пространственную локализацию, приводящую к сильной связи с экситоном и огромному расщеплению Раби. Теоретически ...
Added: October 9, 2021
Юрасов Д. В., Байдакова Н. А., Verbus V. A. et al., В кн.: Труды ХХIV Международного симпозиума «Нанофизика и наноэлектроника», 10-13 марта 2020, Нижний НовгородТ. 2.: Нижегородский государственный университет им. Н.И. Лобачевского, 2020. С. 819–820.
Added: November 9, 2020
Бабичев А. В., Кадинская С. А., Шубина К. Ю. et al., Физика и техника полупроводников 2020 Т. 54 № 9 С. 833–840
The results of experiments aimed at fabricating and studying the properties of photodetector structures based on single-layer graphene produced by chemical vapor deposition are presented. The configuration of a Ta2O5 vertical microcavity with a resonance wavelength of about 850 nm and a lower dielectric SiO2/Ta2O5 distributed Bragg reflector is taken as the base structure. The ...
Added: November 9, 2020
Оценка вклада поверхностной рекомбинации в микродисковых лазерах с помощью высокочастотной модуляции
Zhukov A., Moiseev E., Kryzhanovskaya N. et al., Физика и техника полупроводников 2019 Т. 53 № 8 С. 1122–1127
Исследованы микродисковые лазеры диаметром 10−30 мкм, работающие при комнатной температуре без
термостабилизации, с активной областью на основе наноструктур гибридной размерности — квантовых
ям−точек. Выполнены высокочастотные измерения отклика микролазеров в режиме прямой малосигнальной
модуляции, с помощью которых установлены параметры быстродействия и проведен их анализ в зависимости
от диаметра микролазера. Обнаружено, что K-фактор составляет (0.8 ± 0.2) нс, что соответствует оптическим ...
Added: October 1, 2020
Zhukov A., Kryzhanovskaya N., Moiseev E. et al., Физика и техника полупроводников 2020 Т. 54 № 6 С. 570–574
A model is developed that makes it possible to analytically determine the threshold current of a microdisk laser with consideration for its self-heating as a function of the ambient temperature and the microlaser diameter. It is shown that there exists a minimum microdisk diameter determined by self-heating, up to which continuous-wave lasing can be reached ...
Added: September 15, 2020
Kochiev M. V., Belykh V.V., Sibeldin N. N. et al., Physical Review B: Condensed Matter and Materials Physics 2019 Vol. 99 P. 035310
We investigate the statistics of microcavity polariton Bose–Einstein condensation by measuring photoluminescence dynamics from a GaAs microcavity excited by single laser excitation pulses. We directly observe fluctuations (jitter) of the polariton condensation onset time and model them using a master equation for the occupancy probabilities. The jitter of the condensation onset time is an inherent ...
Added: November 23, 2019
Kovaleva N. N., Chvostova D., Potůčhek Z. et al., 2D Materials 2019 Vol. 6 No. 4 P. 045021-1–045021-10
Plasma functionalization of graphene is one of the facile ways to tune its doping level without the
need for wet chemicals making graphene photoluminescent. Microscopic corrugations in the twodimensional
structure of bilayer CVD graphene having a quasi-free-suspended top layer, such as
graphene ripples, nanodomes, and bubbles, may significantly enhance local reactivity leading to
etching effects on exposure to plasma. ...
Added: October 21, 2019