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Author | de Lange, Gert; Krieg, Jean-Michel; Honingh, Netty; Karpov, Alexandre; Cherednichenko, Sergey | ||||
Title | Performance of the HIFI flight mixers | Type | Conference Article | ||
Year | 2008 | Publication | Proc. 19th Int. Symp. Space Terahertz Technol. | Abbreviated Journal | |
Volume | Issue | Pages | 98-105 | ||
Keywords | HEB mixer applications, HEB applications | ||||
Abstract | We summarize the technology and final results of the superconducting heterodyne SIS and HEB mixers that are developed for the HIFI instrument. Within HIFI 7 frequency bands cover the frequency range from 480 GHz to 1910 GHz. We describe the different device technologies and optical coupling schemes that are used to cover the frequency bands. The efforts of the different mixer teams that participate in HIFI have contributed to an instrument that will have unprecedented sensitivity and frequency coverage. | ||||
Address | Groningen | ||||
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Notes | Approved | no | |||
Call Number | Serial | 1074 | |||
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Author | Lobanov, Y.; Tong, C.; Blundell, R.; Gol'tsman, G. | ||||
Title | A study of direct detection effect on the linearity of hot electron bolometer mixers | Type | Conference Article | ||
Year | 2009 | Publication | Proc. 20th Int. Symp. Space Terahertz Technol. | Abbreviated Journal | Proc. 20th ISSTT |
Volume | Issue | Pages | 282-287 | ||
Keywords | HEB mixer, direct detection effect | ||||
Abstract | We have performed a study of how direct detection affects the linearity and hence the calibration of an HEB mixer. Two types of waveguide HEB devices have been used: a 0.8 THz HEB mixer and a 1.0 THz HEB mixer which is ~5 times smaller than the former. Two independent experimental approaches were used. In the ΔG/G method, the conversion gain of the HEB mixer is first measured as a function of the bias current for a number of bias voltages. At each bias setting, we carefully measure the change in the operating current when the input loads are switched. From the measured data, we can derive the expected difference in gain between the hot and cold loads. In the second method (injection method [1]), the linearity of the HEB mixer is independently measured by injecting a modulated signal for different input load temperatures. The results of both approaches confirm that there is gain compression in the operation of HEB mixers. Based on the results of our measurements, we discuss the impact of direct detection effects on the operation of HEB mixers. | ||||
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Notes | Approved | no | |||
Call Number | RPLAB @ gujma @ | Serial | 724 | ||
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Author | Lobanov, Y. V.; Tong, Cheuk-Yu E.; Hedden, A. S.; Blundell, R.; Gol'tsman, G. N. | ||||
Title | Microwave-assisted슠measurement슠of the슠frequency슠response슠of슠terahertz슠HEB슠mixers슠with a슠fourier슠transform슠spectrometer | Type | Conference Article | ||
Year | 2010 | Publication | 21st International Symposium on Space Terahertz Technology | Abbreviated Journal | 21st ISSTT |
Volume | Issue | Pages | 420-423 | ||
Keywords | HEB mixer | ||||
Abstract | We describe a novel method of operation of the HEB direct detector for use with a Fourier Transform Spectrometer. Instead of elevating the bath temperature, we have measured the RF response of waveguide HEB mixers by applying microwave radiation to select appropriate bias conditions. In our experiment, a microwave signal is injected into the HEB mixer via its IF port. By choosing an appropriate injection level, the device can be operated close to the desired operating point. Furthermore, we have shown that both thermal biasing and microwave injection can reproduce the same spectral response of the HEB mixer. However, with the use of microwave injection, there is no need to wait for the mixer to reach thermal equilibrium, so characterisation can be done in less time. Also, the liquid helium consumption for our wet cryostat is also reduced. We have demonstrated that the signalto-noise ratio of the FTS measurements can be improved with microwave injection. | ||||
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Notes | Approved | no | |||
Call Number | RPLAB @ gujma @ | Serial | 725 | ||
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Author | Ожегов, Роман Викторович | ||||
Title | Флуктуационная чувствительность и стабильность приемников с СИС и HEB смесителями для терагерцового тепловидения | Type | Journal Article | ||
Year | 2011 | Publication | Радиофизика | Abbreviated Journal | |
Volume | Issue | Pages | 135 | ||
Keywords | HEB | ||||
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Notes | Approved | no | |||
Call Number | RPLAB @ gujma @ | Serial | 731 | ||
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Author | Shurakov, Alexander; Tong, Edward; Blundell, Raymond; Gol'tsman, Gregory | ||||
Title | Microwave stabilization of HEB mixer by a microchip controller | Type | Conference Article | ||
Year | 2012 | Publication | IEEE MTT-S international microwave symposium digest | Abbreviated Journal | |
Volume | Issue | Pages | 1-3 | ||
Keywords | HEB mixer stability, microwave injection, Allan variance, Allan time | ||||
Abstract | The stability of a Hot Electron Bolometer (HEB) mixer can be improved by the use of microwave injection. In this article we report a refinement of this approach. We introduce a microchip controller to facilitate the implementation of the stabilization scheme, and demonstrate that the feedback loop effectively suppresses drifts in the HEB bias current, leading to an improvement in the receiver stability. The measured Allan time of the mixer's IF output power is increased to > 10 s. | ||||
Address | Montreal, QC, Canada | ||||
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Notes | Approved | no | |||
Call Number | Serial | 857 | |||
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Author | Khosropanah, P.; Merkel, H.; Yngvesson, S.; Adam, A.; Cherednichenko, S.; Kollberg, E. | ||||
Title | A distributed device model for phonon-cooled HEB mixers predicting IV characteristics, gain, noise and IF bandwidth | Type | Conference Article | ||
Year | 2000 | Publication | Proc. 11th Int. Symp. Space Terahertz Technol. | Abbreviated Journal | |
Volume | Issue | Pages | 474-488 | ||
Keywords | HEB mixer numerical model, diffusion cooling channel, diffusion channel, distributed HEB model, distributed model | ||||
Abstract | A distributed model for phonon-cooled superconductor hot electron bolometer (HEB) mixers is given, which is based on solving the one-dimensional heat balance equation for the electron temperature profile along the superconductor strip. In this model it is assumed that the LO power is absorbed uniformly along the bridge but the DC power absorption depends on the local resistivity and is thus not uniform. The electron temperature dependence of the resistivity is assumed to be continuous and has a Fermi form. These assumptions are used in setting up the non-linear heat balance equation, which is solved numerically for the electron temperature profile along the bolometer strip. Based on this profile the resistance of the device and the IV curves are calculated. The IV curves are in excellent agreement with measurement results. Using a small signal model the conversion gain of the mixer is obtained. The expressions for Johnson noise and thermal fluctuation noise are derived. The calculated results are in close agreement with measurements, provided that one of the parameters used is adjusted. | ||||
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Publisher | Place of Publication | University of Michigan, Ann Arbor, MI USA | Editor | ||
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Notes | Approved | no | |||
Call Number | Serial | 893 | |||
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Author | Kooi, Jacob Willem | ||||
Title | Advanced receivers for submillimeter and far infrared astronomy | Type | Book Whole | ||
Year | 2008 | Publication | University of Groningen | Abbreviated Journal | RUG |
Volume | Issue | Pages | |||
Keywords | HEB, SIS, TES, NEP, noise temperature, IF bandwidth, waveguide, impedance, conversion gain, FTS, integrated array, stability, Allan variance, multi-layer antireflection coating | ||||
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Corporate Author | Thesis | Doctoral thesis | |||
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ISSN | ISBN | 978-90-367-3653-4 | Medium | ||
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Notes | Approved | no | |||
Call Number | Serial | 881 | |||
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Author | Ynvesson, K. Sigfrid; Kollberg, Erik L. | ||||
Title | Optimum receiver noise temperature for NbN HEB mixers according to standard model | Type | Conference Article | ||
Year | 1999 | Publication | Proc. 10th Int. Symp. Space Terahertz Technol. | Abbreviated Journal | |
Volume | Issue | Pages | 566-582 | ||
Keywords | HEB mixer model, standard model, electro-thermal feedback, self-heating parameter, heating efficiency | ||||
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Notes | Approved | no | |||
Call Number | Serial | 895 | |||
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Author | Khosropanah, Pourya | ||||
Title | NbN and NbTiN hot electron bolometer THz mixers | Type | Book Whole | ||
Year | 2003 | Publication | Chalmers University of Technology | Abbreviated Journal | |
Volume | Issue | Pages | |||
Keywords | HEB mixer, hot electron bolometer mixer, NbN, NbTiN, superconducting detector, heterodyne receiver, THz mixer, submillimeter mixer, quasioptical receiver, double slot antenna, twin slot antenna, spiral antenna, receiver noise, FTS, Fourier Transform Spectrometer | ||||
Abstract | The thesis reports the development of Hot Electron Bolometer (HEB) mixers for radio astronomy heterodyne receivers in THz frequency range. Part of this work is the fabrication of HEB devices, which are based on NbN or NbTiN superconducting thin films (â‰<a4>5 nm). They are integrated with wideband spiral or double-slot planar antennas. The mixer chips are incorporated into a quasi-optical receiver. The experimental part of this work focuses on the characterization of the receiver as a whole, and the HEB mixers as a part. Double side band receiver noise temperature and the IF bandwidth are reported for frequencies from 0.7 THz up to 2.6 THz. The spectrum of the direct response of HEB integrated with dierent antennas are measured using Fourier Transform Spectrometer (FTS). The effect of the bolometer size on total receiver performance and the LO power requirements is also discussed. A high-yield and reliable process for fabrication of NbN HEB mixers have been achieved. Over 100 devices with different bolometer geometry, film property and also different antennas have been fabricated and measured. The measured data enables us to discuss the impact of different parameters to the receiver overall performance. This work has provided NbN HEB mixers to the following receivers: TREND (Terahertz REceiver with NbN HEB Device) operating at 1.25-1.5 THz, installed in AST/RO Submillimeter Wave Telescope, Amundsen/Scott South Pole Station, in 2002-2003. Band 6-low (1.410-1.700 THz) and 6-high (1.700-1.920 THz) of the HIFI (Heterodyne Instrument for Far Infra-red) in the Herschel Space Observatory, due to launch in 2007 by ESA (European Space Agency). Besides, there has been continuous efforts to develop better models to explain the mixer performance more accurately. They are based on two temperature model for electrons and phonons and solving one-dimensional heat balance equations along the bolometer. The principles of these models are illustrated and the calculated results are compared with measured data. |
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Corporate Author | Thesis | Ph.D. thesis | |||
Publisher | Chalmers University of Technology | Place of Publication | Göteborg | Editor | |
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Notes | Approved | no | |||
Call Number | Serial | 910 | |||
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Author | Kawamura, J.; Blundell, R.; Tong, C.-Y. E.; Golts'man, G.; Gershenzon, E.; Voronov B. | ||||
Title | Superconductive NbN hot-electron bolometric mixer performance at 250 GHz | Type | Conference Article | ||
Year | 1996 | Publication | Proc. 7th Int. Symp. Space Terahertz Technol. | Abbreviated Journal | Proc. 7th Int. Symp. Space Terahertz Technol. |
Volume | Issue | Pages | 331-336 | ||
Keywords | NbN HEB mixers | ||||
Abstract | Thin film NbN (<40 A) strips are used as waveguide mixer elements. The electron cooling mechanism for the geometry is the electron-phonon interaction. We report a receiver noise temperature of 750 K at 244 GHz, with / IF = 1.5 GHz, Af= 500 MHz, and Tphysical = 4 K. The instantaneous bandwidth for this mixer is 1.6 GHz. The local oscillator (LO) power is 0.5 1.tW with 3 dB-uncertainty. The mixer is linear to 1 dB up to an input power level 6 dB below the LO power. We report the first detection of a molecular line emission using this class of mixer, and that the receiver noise temperature determined from Y-factor measurements reflects the true heterodyne sensitivity. | ||||
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Notes | Approved | no | |||
Call Number | Serial | 945 | |||
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Author | Palma, F.; Teppe, F.; Fatimy, A. E.; Green, R.; Xu, J.; Vachontin, Y.; Tredicucci, A.; Goltsman, G.; Knap, W. | ||||
Title | THz communication system based on a THz quantum cascade laser and a hot electron bolometer | Type | Conference Article | ||
Year | 2010 | Publication | 35th Int. Conf. Infrared, Millimeter, and Terahertz Waves | Abbreviated Journal | 35th Int. Conf. Infrared, Millimeter, and Terahertz Waves |
Volume | Issue | Pages | 11623798 (1 to 2) | ||
Keywords | QCL, HEB detector | ||||
Abstract | We present the experimental study of the direct emission – detection system based on the THz Quantum Cascade Laser as a source and Hot Electron Bolometer (HEB) detector – in view of its application as an optical communication system. We show that the system can efficiently transmit the QCL Terahertz pulses. We estimate the maximal modulation speed of the system to be about several GHz and show that it is limited only by the QCL pulse power supply, detector amplifier and connection line/wires parameters. | ||||
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Notes | Approved | no | |||
Call Number | Serial | 1391 | |||
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Author | Titova, N; Kardakova, A.; Tovpeko, N; Ryabchun, S.; Mandal, S.; Morozov, D.; Klemencic, G. M.; Giblin, S.R.; Williams, O. A.; Goltsman, G. N. | ||||
Title | Superconducting diamond films as perspective material for direct THz detectors | Type | Abstract | ||
Year | 2017 | Publication | Proc. 28th Int. Symp. Space Terahertz Technol. | Abbreviated Journal | Proc. 28th Int. Symp. Space Terahertz Technol. |
Volume | Issue | Pages | 82 | ||
Keywords | KID, HEB, superconducting diamond films, boron-doped diamond films, Al, TiN, Si substrates, NEP | ||||
Abstract | Superconducting films with a high resistivity in the normal state have established themselves as the best materials for direct THz radiation sensors, such as kinetic inductance detectors (KIDs) [1] and hot electron bolometers (nano-HEBs) [2]. The primary characteristics of the future instrument such as the sensitivity and the response time are determined by the material parameters such as the electron-phonon (e-ph) interaction time, the electron density and the resistivity of the material. For direct detectors, such as KIDs and nano-HEBs, to provide a high sensitivity and low noise one prefer materials with long e-ph relaxation times and low values of the electron density. As a potential material for THz radiation detection we have studied superconducting diamond films. A significant interest to diamond for the development of electronic devices is due to the evolution of its properties with the boron dopant concentration. At a high boron doping concentration, n B ~5·10 20 cm -3 , diamond has been reported to become a superconducting with T c depending on the doping level. Our previous study of energy relaxation in single-crystalline boron-doped diamond films epitaxially grown on a diamond shows a remarkably slow energy-relaxation at low temperatures. The electron-phonon cooling time varies from 400 ns to 700 ns over the temperature range 2.2 K to 1.7 K [3]. In superconducting materials such as Al and TiN, traditionally used in KIDs, the e-ph cooling times at 1.7 K correspond to ~20 ns [4] and ~100 ns [5], correspondingly. Such a noticeable slow e-ph relaxation in boron-doped diamond, in combination with a low value of carrier density (~10 21 cm -3 ) in comparison with typical metals (~10 23 cm -3 ) and a high normal state resistivity (~1500 μΩ·cm) confirms a potential of superconducting diamond for superconducting bolometers and resonator detectors. However, the price and the small substrate growth are of single crystal diamond limit practical applications of homoepitaxial diamond films. As an alternative way with more convenient technology, one can employ heteroepitaxial diamond films grown on large-size Si substrates. Here we report about measurements of e-ph cooling times in superconducting diamond grown on silicon substrate and discuss our expectations about the applicability of boron-doped diamond films to superconducting detectors. Our estimation of limit value of noise-equivalent power (NEP) and the energy resolution of bolometer made from superconducting diamond is order 10 -17 W/Hz 1/2 at 2 K and the energy resolution is of 0.1 eV that corresponds to counting single-photon up to 15 um. The estimation was obtained by using the film thickness of 70 nm and ρ ~ 1500 μΩ·cm, and the planar dimensions that are chosen to couple bolometer with 75 Ω log-spiral antenna. Although the value of NEP is far yet from what might like to have for certain astronomical applications, we believe that it can be improved by a suitable fabrication process. Also the direct detectors, based on superconducting diamond, will offer low noise performance at about 2 K, a temperature provided by inexpensive close-cycle refrigerators, which provides another practical advantage of development and application of these devices. [1] P.K. Day, et. al, Nature, 425, 817, 2003. [2] J. Wei, et al, Nature Nanotech., 3, 496, 2008. [3] A. Kardakova, et al, Phys. Rev. B, 93, 064506, 2016. [4] P. Santhanam and D. Prober, Phys. Rev. B, 29, 3733, 1984 [5] A. Kardakova, et al, Appl. Phys. Lett, vol. 103, p. 252602, 2013. | ||||
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Notes | Approved | no | |||
Call Number | Serial | 1173 | |||
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Author | Ozhegov, R. V.; Smirnov, A. V.; Vakhtomin, Yu. B.; Smirnov, K. V.; Divochiy, A. V.; Goltsman, G. N. | ||||
Title | Ultrafast superconducting bolometer receivers for terahertz applications | Type | Abstract | ||
Year | 2009 | Publication | Proc. PIERS | Abbreviated Journal | Proc. PIERS |
Volume | Issue | Pages | 867 | ||
Keywords | HEB | ||||
Abstract | The research by the group of Moscow State Pedagogical University into the hot-electron phenomena in thin superconducting films has led to the development of new types of detectors and their use both in fundamental and applied studies. In this paper, we present the results of testing the terahertz HEB receiver systems based on ultrathin (∼ 4 nm) NbN and MoRe detectors with a response time of 50 ps and 1 ns, respectively. We have developed three types of devices which differ in the way a terahertz signal is coupled to the detector and cover the following ranges: 0.3–3 THz, 0.1–30 THz and 25–70 THz. In the case of the receiving system optimized for 0.3–3 THz, the sensitive element (a strip of asuperconductor with planar dimensions of 0.2μm (length) by 1.7μm (width)) was integrated witha planar broadband log-spiral antenna. For additional focusing ofthe incident radiation a silicon hyperhemispherical lens was used. For the 0.1–30 THz receivingsystem, the sensitive element was patterned as parallel strips(2μm wide each) filling an area of 500×500μm2with a filling factor of 0.5. In the receivingsystem of this type we used direct coupling of the incident radiation to the sensitive element. Inthe 25–70 THz range (detector type 2/2a in Table 1) we used a square-shaped superconductingdetector with planar dimensions of 10×10μm2. Incident radiation was coupled to the detectorwith the use of a germanium hyperhemispherical lens.The response time of the above receiving systems is determined by the cooling rate of the hotelectrons in the film. That depends on the electron-phonon interaction time, which is less forultrathin NbN than in MoRe. | ||||
Address | Moscow, Russia | ||||
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Publisher | The Electromagnetics Academy | Place of Publication | 777 Concord Avenue, Suite 207 Cambridge, MA 02138 | Editor | |
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ISSN | 1559-9450 | ISBN | 978-1-934142-09-7 | Medium | |
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Notes | Approved | no | |||
Call Number | RPLAB @ sasha @ ozhegovultrafast | Serial | 1022 | ||
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Author | Smirnov, K. V.; Vakhtomin, Yu. B.; Divochiy, A. V.; Ozhegov, R. V.; Pentin, I. V.; Gol'tsman, G. N. | ||||
Title | Infrared and terahertz detectors on basis of superconducting nanostructures | Type | Conference Article | ||
Year | 2010 | Publication | Microwave and Telecom. Technol. (CriMiCo), 20th Int. Crimean Conf. | Abbreviated Journal | |
Volume | Issue | Pages | 823-824 | ||
Keywords | SSPD, SNSPD, HEB | ||||
Abstract | Results of development of single-photon receiving systems of visible, infrared and terahertz range based on thin-film superconducting nanostructures are presented. The receiving systems are produced on the basis of superconducting nanostructures, which function by means of hot-electron phenomena. | ||||
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Publisher | Place of Publication | Editor | IEEE | ||
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Call Number | RPLAB @ sasha @ smirnov2010infrared | Serial | 1025 | ||
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Author | Goltsman, G. N.; Korneev, A. A.; Finkel, M. I.; Divochiy, A. V.; Florya, I. N.; Korneeva, Y. P.; Tarkhov, M. A.; Ryabchun, S. A.; Tretyakov, I. V.; Maslennikov, S. N.; Kaurova, N. S.; Chulkova, G. M.; Voronov, B. M. | ||||
Title | Superconducting hot-electron bolometer as THz mixer, direct detector and IR single-photon counter | Type | Abstract | ||
Year | 2010 | Publication | 35th Int. Conf. Infrared, Millimeter, and Terahertz Waves | Abbreviated Journal | |
Volume | Issue | Pages | 1-1 | ||
Keywords | SSPD, SNSPD, HEB | ||||
Abstract | We present a new generation of superconducting single-photon detectors (SSPDs) and hot-electron superconducting sensors with record characteristic for many terahertz and optical applications. | ||||
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ISSN | 2162-2027 | ISBN | Medium | ||
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Notes | Approved | no | |||
Call Number | RPLAB @ sasha @ goltsman2010superconducting | Serial | 1028 | ||
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