| Records |
| Author |
Антипов, Андрей Владимирович; Дивочий, Александр Валерьевич; Вахтомин, Юрий Борисович; Финкель, Матвей Ильич; Смирнов, Константин Владимирович |
| Title |
Способ прецизионного позиционирования чувствительного элемента фотонного детектора |
Type |
Patent |
| Year |
2014 |
Publication |
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Abbreviated Journal |
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Issue |
RU 2506664 C1 |
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| Abstract |
Изобретение относится к способам, позволяющим производить совмещение фотонных детекторов относительно оптического излучения. Способ прецизионного позиционирования чувствительного элемента фотонного детектора относительно амплитудно-модулированного оптического излучения включает смещение чувствительного элемента фотонного детектора постоянным током с последующей регистрацией электрического сигнала, возникающего на контактах детектора на частоте модуляции излучения. Полученный при этом сигнал используют как параметр, определяющий качество позиционирования. Обеспечивается повышение технико-эксплуатационных характеристик детектора. |
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no |
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1816 |
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| Author |
Smirnov, A. V.; Karmantsov, M. S.; Smirnov, K. V.; Vakhtomin, Y. B.; Masterov, D. V.; Tarkhov, M. A.; Pavlov, S. A.; Parafin, A. E. |
| Title |
Terahertz response of thin-film YBCO bolometers |
Type |
Journal Article |
| Year |
2012 |
Publication |
Tech. Phys. |
Abbreviated Journal |
Tech. Phys. |
| Volume |
57 |
Issue |
12 |
Pages |
1716-1719 |
| Keywords |
YBCO HEB |
| Abstract |
The bolometric response of high-temperature thin-film YBCO superconducting detectors to an electromagnetic radiation with a frequency of 2.5 THz is measured for the first time. The minimum value of the noise-equivalent power of the detectors is 3.5 × 10−9 W/Hz−−−√. The feasibility of further increasing the sensitivity of the detectors is discussed. |
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1063-7842 |
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1817 |
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Чулкова, Г. М.; Корнеев, А. А.; Смирнов, К. В.; Окунев, О. В. |
| Title |
Энергетическая релаксация в примесных металлах, двумерном электронном газе в AlGaAs-GaAs, сверхпроводниковых пленках NbN и детекторы субмиллиметрового и ик излучения на их основе |
Type |
Book Whole |
| Year |
2012 |
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Pages |
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| Keywords |
2DEG, AlGaAs/GaAs, NbN detectors |
| Abstract |
Монография посвящена обзору исследований влияния эффектов электронного беспорядка на электронное взаимодействие в металлах, сверхпроводниках, полупроводниках, а также в различных низкоразмерных структурах. Актуальность поднятых в монографии вопросов определяется интенсивным развитием нанотехнологий, созданием новых наноструктурированных материалов и уникальных наноэлементов для электроники и фотоники. Упругое электронное рассеяние на границах наноструктур качественно меняет взаимодействие электронов с фонолами, что, безусловно, должно учитываться при проектировании соответствующей элементной базы. Прикладная часть работы посвящена контролируемой модификации электронных процессов для оптимизации новых наносенсоров на основе электронного разогрева в сверхпроводниковых и полупроводниковых структурах. Монография предназначена для студентов старших курсов, аспирантов и начинающих следователей, работающих в области сверхпроводниковой наноэлектроники. |
| Address |
Москва |
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Прометей, МПГУ |
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ISBN |
978-5-4263-0118-4 |
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| Notes |
УДК: 537.311 |
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no |
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Serial |
1818 |
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| Author |
Смирнов, Константин Владимирович |
| Title |
Энергетическая релаксация электронов в 2D-канале гетеропереходов GAAS/ALGAAS и транспортные процессы в структурах полупроводник-сверхпроводник на их основе |
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Manuscript |
| Year |
2000 |
Publication |
М. МПГУ |
Abbreviated Journal |
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2DEG, AlGaAs/GaAs heterostructures, NbN films |
| Abstract |
Диссертация посвящена изучению электрон-фононного взаимодействия в двумерном электронном газе, образующемся на границе раздела полупроводников AlGaAs и GaAs, а также созданию на основе гетероперехода GaAs/AlGaAs и сверхпроводника NbN гибридных структур сверхпроводник-полупроводник-сверхпроводник и изучению их электрофизических свойств. |
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Москва, МПГУ |
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Ph.D. thesis |
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no |
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Serial |
1830 |
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| Author |
Смирнов, К. В. |
| Title |
AlGaAs/GaAs смеситель на эффекте разогрева двумерных электронов для тепловизора субмиллиметрового диапазона |
Type |
Abstract |
| Year |
2003 |
Publication |
Тезисы докладов VI Российской конференции по физике полупроводников |
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Issue |
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Pages |
181 |
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2DEG, AlGaAs/GaAs heterostructures, mixer |
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ФТИ им. А. Ф. Иоффе, Санк-Петербург |
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VI Российской конференции по физике полупроводников (27-31 октября) |
| Notes |
Unconfirmed; Сама конференция, однако, была -- её упоминают: [http://www.nsc.ru/HBC/article.phtml?nid=271&id=17], [https://www.isp.nsc.ru/institut/nauchnye-podrazdeleniya/lab-20/publikatsii/2003], [http://www.ioffe.ru/sem_tech/sem%5Fteh%5Fmovpe%5Fpublications%5Fru.htm#R2003], [https://istina.ips.ac.ru/collections/828771/] |
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1837 |
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Sidorova, M.; Semenov, A.; Hübers, H.-W.; Kuzmin, A.; Doerner, S.; Ilin, K.; Siegel, M.; Charaev, I.; Vodolazov, D. |
| Title |
Timing jitter in photon detection by straight superconducting nanowires: Effect of magnetic field and photon flux |
Type |
Journal Article |
| Year |
2018 |
Publication |
Phys. Rev. B |
Abbreviated Journal |
Phys. Rev. B |
| Volume |
98 |
Issue |
13 |
Pages |
134504 (1 to 14) |
| Keywords |
SNSPD, NbN namowires |
| Abstract |
We studied the effects of the external magnetic field and photon flux on timing jitter in photon detection by straight superconducting NbN nanowires. At two wavelengths 800 and 1560 nm, statistical distribution in the appearance times of photon counts exhibits Gaussian shape at small times and an exponential tail at large times. The characteristic exponential time is larger for photons with smaller energy and increases with external magnetic field while variations in the Gaussian part of the distribution are less pronounced. Increasing photon flux drives the nanowire from the discrete quantum detection regime to the uniform bolometric regime that averages out fluctuations of the total number of nonequilibrium electrons created by the photon and drastically reduces jitter. The difference between standard deviations of Gaussian parts of distributions for these two regimes provides the measure for the strength of electron-number fluctuations; it increases with the photon energy. We show that the two-dimensional hot-spot detection model explains qualitatively the effect of magnetic field. |
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2469-9950 |
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no |
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1842 |
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Emelianov, A. V.; Nekrasov, N. P.; Moskotin, M. V.; Fedorov, G. E.; Otero, N.; Romero, P. M.; Nevolin, V. K.; Afinogenov, B. I.; Nasibulin, A. G.; Bobrinetskiy, I. I. |
| Title |
Individual SWCNT transistor with photosensitive planar junction induced by two‐photon oxidation |
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Journal Article |
| Year |
2021 |
Publication |
Adv. Electron. Mater. |
Abbreviated Journal |
Adv. Electron. Mater. |
| Volume |
7 |
Issue |
3 |
Pages |
2000872 |
| Keywords |
SWCNT transistors |
| Abstract |
The fabrication of planar junctions in carbon nanomaterials is a promising way to increase the optical sensitivity of optoelectronic nanometer-scale devices in photonic connections, sensors, and photovoltaics. Utilizing a unique lithography approach based on direct femtosecond laser processing, a fast and easy technique for modification of single-walled carbon nanotube (SWCNT) optoelectronic properties through localized two-photon oxidation is developed. It results in a novel approach of quasimetallic to semiconducting nanotube conversion so that metal/semiconductor planar junction is formed via local laser patterning. The fabricated planar junction in the field-effect transistors based on individual SWCNT drastically increases the photoresponse of such devices. The broadband photoresponsivity of the two-photon oxidized structures reaches the value of 2 × 107 A W−1 per single SWCNT at 1 V bias voltage. The SWCNT-based transistors with induced metal/semiconductor planar junction can be applied to detect extremely small light intensities with high spatial resolution in photovoltaics, integrated circuits, and telecommunication applications. |
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2199-160X |
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no |
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1843 |
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Divochiy, A.; Misiaszek, M.; Vakhtomin, Y.; Morozov, P.; Smirnov, K.; Zolotov, P.; Kolenderski, P. |
| Title |
Single photon detection system for visible and infrared spectrum range |
Type |
Journal Article |
| Year |
2018 |
Publication |
Opt. Lett. |
Abbreviated Journal |
Opt. Lett. |
| Volume |
43 |
Issue |
24 |
Pages |
6085-6088 |
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| Abstract |
We demonstrate niobium nitride based superconducting single-photon detectors sensitive in the spectral range 452-2300 nm. The system performance was tested in a real-life experiment with correlated photons generated by means of spontaneous parametric downconversion, where one photon was in the visible range and the other was in the infrared range. We measured a signal to noise ratio as high as 4x10(4) in our detection setting. A photon detection efficiency as high as 64% at 1550 nm and 15% at 2300 nm was observed. |
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English |
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0146-9592 |
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https://arxiv.org/abs/1807.04273 |
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no |
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1227 |
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Gorokhov, G.; Bychanok, D.; Gayduchenko, I.; Rogov, Y.; Zhukova, E.; Zhukov, S.; Kadyrov, L.; Fedorov, G.; Ivanov, E.; Kotsilkova, R.; Macutkevic, J.; Kuzhir, P. |
| Title |
THz spectroscopy as a versatile tool for filler distribution diagnostics in polymer nanocomposites |
Type |
Journal Article |
| Year |
2020 |
Publication |
Polymers (Basel) |
Abbreviated Journal |
Polymers (Basel) |
| Volume |
12 |
Issue |
12 |
Pages |
3037 (1 to 14) |
| Keywords |
THz spectroscopy; nanocomposites, percolation threshold, time-domain spectroscopy, time-domain spectrometer, TDS |
| Abstract |
Polymer composites containing nanocarbon fillers are under intensive investigation worldwide due to their remarkable electromagnetic properties distinguished not only by components as such, but the distribution and interaction of the fillers inside the polymer matrix. The theory herein reveals that a particular effect connected with the homogeneity of a composite manifests itself in the terahertz range. Transmission time-domain terahertz spectroscopy was applied to the investigation of nanocomposites obtained by co-extrusion of PLA polymer with additions of graphene nanoplatelets and multi-walled carbon nanotubes. The THz peak of permittivity's imaginary part predicted by the applied model was experimentally shown for GNP-containing composites both below and above the percolation threshold. The physical nature of the peak was explained by the impact on filler particles excluded from the percolation network due to the peculiarities of filler distribution. Terahertz spectroscopy as a versatile instrument of filler distribution diagnostics is discussed. |
| Address |
Institute of Photonics, University of Eastern Finland, Yliopistokatu 7, FI-80101 Joensuu, Finland |
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English |
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2073-4360 |
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PMID:33353036; PMCID:PMC7767186 |
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no |
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1780 |
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Гершензон, Е. М. |
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Воздействие электромагнитного излучения на сверхпроводящую плёнку ниобия в резистивном состоянии |
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Conference Article |
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1982 |
Publication |
Тезисы докладов 22 Всесоюзной конференции по физике низких температур |
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79-80 |
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russian |
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231 |
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