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Author Ozhegov, R. V.; Gorshkov, K. N.; Smirnov, K. V.; Gol’tsman, G. N.; Filippenko, L. V.; Koshelets, V. P.
Title Terahertz imaging system based on superconducting integrated receiver Type Conference Article
Year 2010 Publication Proc. 2-nd Int. Conf. Terahertz and Microwave radiation: Generation, Detection and Applications Abbreviated Journal Proc. 2-nd Int. Conf. Terahertz and Microwave radiation: Generation, Detection and Applications
Volume Issue Pages 20-22
Keywords SIS mixer, SIR
Abstract The development of terahertz imaging instruments for security systems is on the cutting edge of terahertz technology. We are developing a THz imaging system based on a superconducting integrated receiver (SIR). An SIR is a new type of heterodyne receiver based on an SIS mixer integrated with a flux-flow oscillator (FFO) and a harmonic mixer which is used for phase-locking the FFO. Developing an array of SIRs would allow obtaining amplitude and phase characteristics of incident radiation in the plane of the receiver. Employing an SIR in an imaging system means building an entirely new instrument with many advantages compare to traditional systems: i) high temperature resolution, comparable to the best results for incoherent receivers; ii) high spectral resolution allowing spectral analysis of various substances; iii) the local oscillator frequency can be varied to obtain images at different frequencies, effectively providing “color” images; iv) since a heterodyne receiver preserves the phase of the radiation, it is possible to construct 3D images. The paper presents a prototype THz imaging system using an 1 pixel SIR. We have studied the dependence of the noise equivalent temperature difference (NETD) on the integration time and also possible ways of achieving best possible sensitivity. An NETD of 13 mK was obtained with an integration time of 1 sec a detection bandwidth of 4 GHz at a local oscillator frequency of 520 GHz. An important advantage of an FFO is its wide operation range: 300-700 GHz.
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Call Number ozhegov2010terahertz Serial 1397
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Author Koshelets, V. P.
Title Integrated superconducting submm receivers Type Miscellaneous
Year 2004 Publication Abbreviated Journal
Volume Issue Pages
Keywords SIR
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Notes Presentation Approved no
Call Number Serial 511
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Author
Title Statue of the SIR program for SR&T (extension to 1 THz) Type Miscellaneous
Year 2004 Publication Abbreviated Journal
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Keywords SIR
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Notes Presentation Approved no
Call Number Serial 512
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Author Koshelets, V. P.; Ermakov, A. B.; Filippenko, L. V.; Koryukin, O. V.; Khudchenko, A. V.; Sobolev, A. S.; Torgashin, M. Yu.; Yagoubov, P. A.; Hoogeveen, R. W. M.; Vreeling, W. J.; Wild, W.; Pylypenko, O. M.
Title Superconducting submm integrated receiver for TELIS Type Conference Article
Year 2006 Publication J. Phys.: Conf. Ser. Abbreviated Journal J. Phys.: Conf. Ser.
Volume 43 Issue Pages 1377-1380
Keywords SIR
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ISSN 1742-6588 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Serial 514
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Author Koshelets, V.P.; Dmitriev, P.N.; Ermakov, A.B.; Sobolev, A.S.; Torgashin, M.Y.; Kurin, V.V.; Pankratov, A.L.; Mygind, J.
Title Optimization of the phase-locked flux-flow oscillator for the submm integrated receiver Type Journal Article
Year 2005 Publication IEEE Trans. Appl. Supercond. Abbreviated Journal
Volume 15 Issue 2 Pages 964-967
Keywords SIR
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ISSN 1051-8223 ISBN Medium
Area Expedition Conference
Notes Approved no
Call Number Serial 515
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