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Author Loudkov, D.; Tong, C.-Y. E.; Marrone, D. P.; Ryabchun, S.; Paine, S. N.; Blundell, R.
Title Transmission measurements of infrared filters for low-noise terahertz receiver applications Type Conference Article
Year 2005 Publication Proc. 16th Int. Symp. Space Terahertz Technol. Abbreviated Journal Proc. 16th Int. Symp. Space Terahertz Technol.
Volume Issue Pages 354-357
Keywords (up) FTS, Zitex, alkali halide, crystalline quartz, Parylene, polyethylene, IR filters, transmission, THz applications
Abstract Infrared (IR) filters are very important to the efficient operation of cryogenic receivers. Usually, such filters are mounted on the radiation shield of the cryostat to reduce the heat load to the 4 K stage. Insufficient filtering may cause the temperature of the mixing element in a receiver to be excessively warm, leading to degradation in sensitivity. These filters should be effective in blocking the room temperature IR radiation from outside the cryostat, yet should be transparent across the desired signal frequency band. In the Terahertz frequency range, which is close to the infrared, it is difficult to find an inexpensive low- loss material that can provide the required IR blocking capacity. We present transmission measurements, made using a Fourier Transform Spectrometer (FTS), of a number of potential infrared filters between 0.4 and 1.6 THz. The filters tested include the widely-used, Teflon-based, Zitex-A and Zitex-G films, alkali halide based infrared filter, and crystalline quartz coated with Parylene, and polyethylene films.
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Notes Approved no
Call Number Serial 1473
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Author Gershenzon, E. M.; Goltsman, G. N.; Ptitsyna, N. G.
Title Investigation of excited donor states in GaAs Type Journal Article
Year 1974 Publication Sov. Phys. Semicond. Abbreviated Journal Sov. Phys. Semicond.
Volume 7 Issue 10 Pages 1248-1250
Keywords (up) GaAs, excited donor states
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Publisher Amer Inst Physics 1305 Walt Whitman Rd, Ste 300, Melville, Ny 11747-4501 Usa Place of Publication Editor
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Call Number Serial 1733
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Author Gershenzon, E. M.; Goltsman, G.; Orlova, S.; Ptitsina, N.; Gurvich, Y.
Title Germanium hot-electron narrow-band detector Type Journal Article
Year 1971 Publication Sov. Radio Engineering And Electronic Physics Abbreviated Journal Sov. Radio Engineering And Electronic Physics
Volume 16 Issue 8 Pages 1346
Keywords (up) Ge HEB detectors
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Publisher Scripps Clinic Res Foundation 476 Prospect St, La Jolla, Ca 92037 Place of Publication Editor
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Call Number Serial 1741
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Author Goltsman, G. N.; Maliavkin, A. V.; Ptitsina, N. G.; Selevko, A. G.
Title Magnetic exciton spectroscopy in uniaxially compressed Ge at submillimeter waves Type Conference Article
Year 1986 Publication Izv. Akad. Nauk SSSR, Seriya Fizicheskaya Abbreviated Journal Izv. Akad. Nauk SSSR, Seriya Fizicheskaya
Volume 50 Issue Pages 280-281
Keywords (up) Ge, axial compression loads, excitons, germanium, magnetic spectroscopy, submillimeter waves, Zeeman effect
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Language Russian Summary Language Original Title
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ISSN 0367-6755 ISBN Medium
Area Expedition Conference 3rd Vsesoiuznyi Seminar po Opticheskomu Detektirovaniiu Magnitnykh Rezonansov v Tverdykh Telakh, Kiev, Ukrainian SSR, May 1985
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Call Number Serial 1708
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Author Воеводин, Е. И.; Гершензон, Е. М.; Гольцман, Г. Н.; Птицина, Н. Г.
Title Энергетический спектр мелких акцепторов в сильно одноосно деформированном Ge Type Journal Article
Year 1989 Publication Физика и техника полупроводников Abbreviated Journal Физика и техника полупроводников
Volume 23 Issue 8 Pages 1356-1361
Keywords (up) Ge, crystallography
Abstract Проведены исследования спектров фототермической ионизации мелких акцепторов (В, Аl) в Ge, предельно сжатом вдоль кристаллографической оси [100]. Из данных измерений с учетом теории построен энергетический спектр примесей. Показано, что энергии большого числа уровней четных и нечетных состояний хорошо соответствуют расчету, выполненному для примесей в анизотропном полупроводнике с параметром анизотропии γ=m∗⊥/m∗∥>1.
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Language Russian Summary Language Original Title
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Notes Duplicated as 1692 Approved no
Call Number Serial 1691
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