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Author | Matyushkin, Yakov; Fedorov, Georgy; Moskotin, Maksim; Danilov, Sergey; Ganichev, Sergey; Goltsman, Gregory | ||||
Title | Gate-mediated helicity sensitive detectors of terahertz radiation with graphene-based field effect transistors | Type | Abstract | ||
Year | 2020 | Publication | Graphene and 2dm Virt. Conf. | Abbreviated Journal | Graphene and 2DM Virt. Conf. |
Volume | Issue | Pages | |||
Keywords | single layer graphene, SLG, CVD, plasmons, FET | ||||
Abstract | Closing of the so-called terahertz gap results in an increased demand for optoelectronic devices operating in the frequency range from 0.1 to 10 THz. Active plasmonic in field effect devices based on high-mobility two-dimensional electron gas (2DEG) opens up opportunities for creation of on-chip spectrum [1] and polarization [2] analysers. Here we show that single layer graphene (SLG) grown using CVD method can be used for an all-electric helicity sensitive polarization broad analyser of THz radiation. Allourresults show plasmonic nature of response. Devices are made in a configuration ofa field-effect transistor (FET) with a graphene channel that has a length of 2 mkm and a width of 5.5 mkm. Response of opposite polarity to clockwise and anticlockwise polarized radiation is due to special antenna design (see Fig.1c) as follow works [2,3]. Our approaches can be extrapolated to other 2D materials and used as a tool to characterize plasmonic excitations in them. [1]Bandurin, D. A., etal.,Nature Communications, 9(1),(2018),1-8.[2]Drexler, C.,etal.,Journal of Applied Physics, 111(12),(2012),124504.[3]Gorbenko, I. V.,et al.,physica status solidi (RRL)–Rapid Research Letters, 13(3),(2019),1800464. | ||||
Address | Grenoble, France | ||||
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Area | Expedition | Conference | Graphene and 2dm Virtual Conference & Expo | ||
Notes | Approved | no | |||
Call Number | Serial | 1743 | |||
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Author | Goltsman, Gregory | ||||
Title | Superconducting thin film nanostructures as terahertz and infrared heterodyne and direct detectors | Type | Conference Article | ||
Year | 2017 | Publication | 16th ISEC | Abbreviated Journal | 16th ISEC |
Volume | Issue | Pages | Th-I-QTE-03 (1 to 3) | ||
Keywords | waveguide SSPD, SNSPD | ||||
Abstract | We present our recent achievements in the development of superconducting nanowire single-photon detectors (SNSPDs) integrated with optical waveguides on a chip. We demonstrate both single-photon counting with up to 90% on-chipquantum-efficiency (OCDE), and the heterodyne mixing with a close to the quantum limit sensitivity at the telecommunication wavelength using single device. | ||||
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Area | Expedition | Conference | IEEE/CSC & ESAS Superconductivity News Forum | ||
Notes | Approved | no | |||
Call Number | Serial | 1745 | |||
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