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Maslennikova, Anna; Tretyakov, Ivan; Ryabchun, Sergey; Finkel, Matvey; Kaurova, Natalia; Voronov, Boris; Gol’tsman, Gregory |
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Gain bandwidth and noise temperature of NbN HEB mixers with simultaneous phonon and diffusion cooling |
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2010 |
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Proc. 21th Int. Symp. Space Terahertz Technol. |
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Proc. 21th Int. Symp. Space Terahertz Technol. |
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218-219 |
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The space observatory Millimetron will be operating in the millimeter, sub-millimeter and infrared ranges using a 12-m cryogenic telescope in a single-dish mode, and as an interferometer with the space-earth and space-space baselines (the latter after the launch of the second identical space telescope). The observatory will allow performing astronomical observations with an unprecedented sensitivity (down to nJy level) in the single-dish mode, and observations with a high angular resolution in the interferometer mode. The total spectral range 20 μm – 2 cm is separated into 10 bands. HEB mixers with two cooling channels (diffusion and phonon) have been chosen to be the detectors of choice of the system covering the range from 1 THz to 6 THz as the best detectors in terahertz receivers. This type of HEB has already shown good work in the terahertz range. A gain bandwidth of 6 GHz at an LO frequency of 300 GHz and a noise temperature of 750 K at an LO frequency of 2.5 THz are the best values for HEB mixers with two cooling channels [1]. Theoretical estimations predict a bandwidth up to 12 GHz. Reaching such good result demands more systematic and thorough research. We present the results of the gain bandwidth and noise temperature measurements for superconducting hot- electron bolometer mixers with two cooling channels. These characteristics of the devices of lengths varying from 50 to 200 nm were measured for the purposes of Millimetron at frequencies of 600 GHz, 2.5 THz, and 3.8 THz. For gain bandwidth measurements we use two BWO’s operating at 600 GHz: one as the signal and the second as the LO. The noise temperature measurements were performed using a gas discharge laser as the LO and blackbodies at 77 K and 295 K as input signals. The devices studied consist of 3.5-nm-thick NbN bridges connected to thick (10 nm) high conductivity Au leads fabricated in situ. This method of fabricating devices has already proved promising by opening the diffusion cooling channel. [2] Fig. 1 shows a SEM photograph of a log-spiral antenna with an HEB at its apex. Fig. 1. Left: a SEM photograph of a log-spiral antenna with an HEB at its apex; right: a close-up of the HEB at the antenna apex. [1] S. A. Ryabchun, I. V. Tretyakov, M. I. Finkel, S. N. Maslennikov, N. S. Kaurova, V. A. Seleznev, B. M. Voronov, and G. N. Gol’tsman, NbN phonon-cooled hot-electron bolometer mixer with additional diffusion cooling, Proc. of the 20 th Int. Symp. Space. Technol., Charlottesville, Virginia, USA, April 20 – 22, 2009. 218[2] S. A. Ryabchun * , I. V. Tretyakov, M. I. Finkel, S. N. Maslennikov, N. S. Kaurova, V. A. Seleznev, B. M. Voronov and G. N. Goltsman, Fabrication and characterisation of NbN HEB mixers with in situ gold contacts, Proc. of the 19 th Int. Symp. Space. Technol., Groningen, The Netherlands, April 28-30, 2008 |
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Maslennikova, A.; Larionov, P.; Ryabchun, S.; Smirnov, A.; Pentin, I.; Vakhtomin, Yu.; Smirnov, K.; Kaurova, N.; Voronov, B.; Goltsman, G. |
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Noise equivalent power and dynamic range of NBN hot-electron bolometers |
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2011 |
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Proc. MLPLIT |
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Proc. MLPLIT |
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146-148 |
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NbN HEB |
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Suzdal / Vladimir (Russia) |
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Modern laser physics and laser-information technologies for science and manufacture |
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1st international russian-chinese conference / youthschool-workshop |
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September 23-28, 2011 |
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1386 |
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Maslennikov, S.; Vachtomin, Yu.; Antipov, S.; Smirnov, K.; Kaurova, N.; Grishina, E.; Voronov, B.; Gol'tsman, G. |
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NbN HEB mixers for frequencies of 2.5 and 3.8 THz |
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2004 |
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Proc. Tenth All-Russian sceintific conference of student-physicists and young sceintists (VNKSF-10) |
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Moscow |
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RPLAB @ s @ qoheb_vnksf10_2004 |
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349 |
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Maslennikov, S.; Antipov, S.; Shishkov, A.; Svechnikov, S.; Voronov, B.; Smirnov, K.; Kaurova, N.; Drakinski, V.; Gol'tsman, G. |
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NbN HEB mixer noise temperature measurements with hot/cold load mounted inside the helium cryostat at 300 GHz |
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2002 |
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Proc. Int. Student Seminar on Microwave Appl. of Novel Physical Phenomena supported by IEEE |
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LETI |
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St.-Petersburg |
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324 |
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Maslennikov, S. N.; Morozov, D. V.; Ozhegov, R. V.; Smirnov, K. V.; Okunev, O. V.; Gol’tsman, G. N. |
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Imaging system for submillimeter wave range based on AlGaAs/GaAs hot electron bolometer mixers |
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2004 |
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Proc. 5-th MSMW |
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Proc. 5-th MSMW |
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2 |
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558-560 |
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AlGaAs/GaAs HEB mixers |
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Electromagnetic radiation of the submillimeter (SMM) range is dispersed and absorbed significantly less than infrared (IR) radiation when passing through different objects. That is the reason for the development of an SMM imaging system. In this paper, we discuss the design of an SMM heterodyne imager, based on a matrix of AlGaAs/GaAs heterostructure hot electron bolometer mixers (HEB) with relatively high (about 77 K) operating temperature. The predicted double side band (DSB) noise temperature is about 1000 K and optimal local oscillator (LO) power is about 1 /spl mu/W for such mixers, which seems to be quite prospective for an SMM heterodyne imager. |
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Kharkov, Ukraine |
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The Fifth International Kharkov Symposium on Physics and Engineering of Microwaves, Millimeter, and Submillimeter Waves (IEEE Cat. No.04EX828) |
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1487 |
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Maslennikov, S. N.; Finkel, M. I.; Antipov, S. V.; Polyakov, S. L.; Zhang, W.; Ozhegov, R.; Vachtomin, Yu. B.; Svechnikov, S. I.; Smirnov, K. V.; Korotetskaya, Yu. P.; Kaurova, N. S.; Gol'tsman, G. N.; Voronov, B. M. |
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Spiral antenna coupled and directly coupled NbN HEB mixers in the frequency range from 1 to 70 THz |
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2006 |
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Proc. 17th Int. Symp. Space Terahertz Technol. |
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Proc. 17th Int. Symp. Space Terahertz Technol. |
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177-179 |
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directly coupled NbN HEB mixers |
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We investigate both antenna coupled and directly coupled HEB mixers at several LO frequencies within the range of 2.5 THz to 70 THz. H20 (2.5+10.7 THz), and CO2 (30 THz) gas discharge lasers are used as the local oscillators. The noise temperature of antenna coupled mixers is measured at LO frequencies of 2.5 THz, 3.8 THz, and 30 THz. The results for both antenna coupled and directly coupled mixer types are compared. The devices with in—plane dimensions of 5x5 ,um 2 are pumped by LO radiation at 10.7 THz. The directly coupled HEB demonstrates nearly flat dependence of responsivity on frequency in the range of 25+64 THz. |
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Paris, France |
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386 |
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Maslennikov, S. |
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RF heating efficiency of the terahertz superconducting hot-electron bolometer |
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2014 |
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arXiv |
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arXiv |
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1404.5276 |
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1-4 |
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superconducting hot-electron bolometer mixer, HEB, NbN, distributed model, HEB model, HEB mixer model, heat balance equa-tions, conversion gain, RF heating efficiency, noise temperature, simulation, Euler method |
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We report results of the numerical solution by the Euler method of the system of heat balance equations written in recurrent form for the superconducting hot-electron bolometer (HEB) embedded in an electrical circuit. By taking into account the dependence of the HEB resistance on the transport current we have been able to calculate rigorously the RF heating efficiency, absorbed local oscillator (LO) power and conversion gain of the HEB mixer. We show that the calculated conversion gai nis in excellent agreement with the experimental results, and that the substitution of the calculated RF heating efficiency and absorbed LO power into the expressions for the conversion gain and noise temperature given by the analytical small-signal model of the HEB yields excellent agreement with the corresponding measured values |
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RPLAB @ atomics90 @ |
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954 |
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Marsili, Francesco; Bitauld, David; Fiore, Andrea; Gaggero, Alessandro; Mattioli, Francesco; Leoni, Roberto; Divochiy, Aleksander; Gol'tsman, Gregory |
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Photon-number-resolution at telecom wavelength with superconducting nanowires |
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Miscellaneous |
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2010 |
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IntechOpen |
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SSPD, SNSPD |
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RPLAB @ sasha @ marsiliphoton |
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1036 |
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Marsili, F.; Bitauld, D.; Fiore, A.; Gaggero, A.; Leoni, R.; Mattioli, F.; Divochiy, A.; Korneev, A.; Seleznev, V.; Kaurova, N.; Minaeva, O.; Goltsman, G. |
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Superconducting parallel nanowire detector with photon number resolving functionality |
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2009 |
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J. Modern Opt. |
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J. Modern Opt. |
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56 |
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2-3 |
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334-344 |
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PNR; SSPD; SNSPD; thin superconducting films; photon number resolving detector; multiplication noise; telecom wavelength; NbN |
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We present a new photon number resolving detector (PNR), the Parallel Nanowire Detector (PND), which uses spatial multiplexing on a subwavelength scale to provide a single electrical output proportional to the photon number. The basic structure of the PND is the parallel connection of several NbN superconducting nanowires (100 nm-wide, few nm-thick), folded in a meander pattern. Electrical and optical equivalents of the device were developed in order to gain insight on its working principle. PNDs were fabricated on 3-4 nm thick NbN films grown on sapphire (substrate temperature TS=900C) or MgO (TS=400C) substrates by reactive magnetron sputtering in an Ar/N2 gas mixture. The device performance was characterized in terms of speed and sensitivity. The photoresponse shows a full width at half maximum (FWHM) as low as 660ps. PNDs showed counting performance at 80 MHz repetition rate. Building the histograms of the photoresponse peak, no multiplication noise buildup is observable and a one photon quantum efficiency can be estimated to be QE=3% (at 700 nm wavelength and 4.2 K temperature). The PND significantly outperforms existing PNR detectors in terms of simplicity, sensitivity, speed, and multiplication noise. |
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0950-0340 |
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RPLAB @ gujma @ |
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Marsili, F.; Bitauld, D.; Divochiy, A.; Gaggero, A.; Leoni, R.; Mattioli, F.; Korneev, A.; Seleznev, V.; Kaurova, N.; Minaeva, O.; Gol’tsman, G.; Lagoudakis, K.G.; Benkahoul, M.; Lévy, F.; Fiore, A. |
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Superconducting nanowire photon number resolving detector at telecom wavelength |
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2008 |
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CLEO/QELS |
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CLEO/QELS |
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Qmj1 (1 to 2) |
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PNR SSPD; SNSPD; Detectors; Infrared; Low light level; Diode lasers; Photons; Scanning electron microscopy; Superconductors; Ti:sapphire lasers |
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We demonstrate a photon-number-resolving (PNR) detector, based on parallel superconducting nanowires, capable of resolving up to 5 photons in the telecommunication wavelength range, with sensitivity and speed far exceeding existing approaches. |
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Optical Society of America |
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