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Author Shurakov, A.; Tong, Cheuk-yu E.; Grimes, P.; Blundell, R.; Golt'sman, G.
Title A microwave reflection readout scheme for hot electron bolometric direct detector Type Journal Article
Year 2015 Publication IEEE Trans. THz Sci. Technol. Abbreviated Journal IEEE Trans. THz Sci. Technol.
Volume 5 Issue Pages (up) 81-84
Keywords HEB detectors
Abstract In this paper, we propose and present data from a fast THz detector based on the repurpose of hot electron bolometer mixers (HEB) fabricated from superconducting NbN thinfilm. This detector is essentially a traditional NbN bolometer element that operates under the influence of a microwave pump. The in-jected microwave power serves the dual purpose of enhancing the detector sensitivity and reading out the impedance changes of the device in response to incidentTHz radiation. We have measured an optical Noise Equivalent Power of 4 pW/ Hz for our detector at a bath temperature of 4.2 K. The measurement frequency was 0.83 THz and the modulation frequency was 1.48 kHz. The readout

scheme is versatile and facilitates both high-speed operation as well as multi-pixel applications.
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Call Number RPLAB @ atomics90 @ Serial 950
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Author Aksaev, E. E.; Gershenzon, E. M.; Gershenson, M. E.; Goltsman, G. N.; Semenov, A. D.; Sergeev, A. V.
Title Prospects for using high-temperature superconductors to create electron bolometers Type Journal Article
Year 1989 Publication Pisma v Zhurnal Tekhnicheskoi Fiziki Abbreviated Journal Pisma v Zhurnal Tekhnicheskoi Fiziki
Volume 15 Issue 14 Pages (up) 88-93
Keywords HTS HEB
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Language Russian Summary Language Original Title
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ISSN 0320-0116 ISBN Medium
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Notes Перспективы применения высокотемпературных сверхпроводников для создания электронных болометров Approved no
Call Number Serial 1693
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Author Gershenzon, E. M.; Gershenson, M. E.; Goltsman, G. N.; Karasik, B. S.; Lyulkin, A. M.; Semenov, A. D.
Title Fast-response superconducting electron bolometer Type Journal Article
Year 1989 Publication Pisma v Zhurnal Tekhnicheskoi Fiziki Abbreviated Journal Pisma v Zhurnal Tekhnicheskoi Fiziki
Volume 15 Issue 3 Pages (up) 88-92
Keywords Nb HEB
Abstract The general design, operation, and performance characteristics of fast-response electronic bolometers using a thin superconducting Nb film on a leucosapphire substrate are briefly reviewed. The volt-watt sensitivity of the bolometrs is 2,000-200,000 V/W, the operating temperature is 1.6 K, and the time constant is 4-4.5 ns.
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Language Russian Summary Language Original Title
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Call Number Serial 1694
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Author Meledin, Denis; Pavolotsky, Alexey; Desmaris, Vincent.; Lapkin, Igor; Risacher, Christophe; Perez, Victor; Henke, Douglas; Nystrom, Olle; Sundin, Erik; Dochev, Dimitar; Pantaleev, Miroslav; Fredrixon, Mathias; Strandberg, Magnus; Voronov, Boris; Goltsman, Gregory; Belitsky, Victor
Title A 1.3-THz balanced waveguide HEB mixer for the APEX telescope Type Journal Article
Year 2009 Publication IEEE Trans. Microw. Theory Techn. Abbreviated Journal
Volume 57 Issue 1 Pages (up) 89-98
Keywords HEB, mixer, waveguide, balanced, NbN
Abstract In this paper, we report about the development, fabrication, and characterization of a balanced waveguide hot electron bolometer (HEB) receiver for the Atacama Pathfinder EXperiment telescope covering the frequency band of 1.25–1.39 THz. The receiver uses a quadrature balanced scheme and two HEB mixers, fabricated from 4- to 5-nm-thick NbN film deposited on crystalline quartz substrate with an MgO buffer layer in between. We employed a novel micromachining method to produce all-metal waveguide parts at submicrometer accuracy (the main-mode waveguide dimensions are 90×180 μm). We present details on the mixer design and measurement results, including receiver noise performance, stability and “first-light” at the telescope site. The receiver yields a double-sideband noise temperature averaged over the RF band below 1200 K, and outstanding stability with a spectroscopic Allan time more than 200 s.
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ISSN 0018-9480 ISBN Medium
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Call Number RPLAB @ lobanovyury @ Serial 554
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Author Gershenzon, E. M.; Gol'tsman, G.; Ptitsina, N. G.
Title Energy spectrum of free excitons in germanium Type Journal Article
Year 1973 Publication JETP Lett. Abbreviated Journal JETP Lett.
Volume 18 Issue 3 Pages (up) 93
Keywords Ge, free excitons, energy spectrum
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Call Number Serial 1734
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