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Rasulova, G. K.; Pentin, I. V.; Vakhtomin, Y. B.; Smirnov, K. V.; Khabibullin, R. A.; Klimov, E. A.; Klochkov, A. N.; Goltsman, G. N. |
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Pulsed terahertz radiation from a double-barrier resonant tunneling diode biased into self-oscillation regime |
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Journal Article |
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2020 |
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J. Appl. Phys. |
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J. Appl. Phys. |
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128 |
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22 |
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224303 (1 to 11) |
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HEB, resonant tunneling diode, RTD |
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The study of the bolometer response to terahertz (THz) radiation from a double-barrier resonant tunneling diode (RTD) biased into the negative differential conductivity region of the I–V characteristic revealed that the RTD emits two pulses in a period of intrinsic self-oscillations of current. The bolometer pulse repetition rate is a multiple of the fundamental frequency of the intrinsic self-oscillations of current. The bolometer pulses are detected at two critical points with a distance between them being half or one-third of a period of the current self-oscillations. An analysis of the current self-oscillations and the bolometer response has shown that the THz photon emission is excited when the tunneling electrons are trapped in (the first pulse) and then released from (the second pulse) miniband states. |
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0021-8979 |
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1262 |
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Aksaev, E. E.; Gershenzon, E. M.; Gershenson, M. E.; Goltsman, G. N.; Semenov, A. D.; Sergeev, A. V. |
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Prospects for using high-temperature superconductors to create electron bolometers |
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1989 |
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Pisma v Zhurnal Tekhnicheskoi Fiziki |
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Pisma v Zhurnal Tekhnicheskoi Fiziki |
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15 |
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14 |
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88-93 |
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HTS HEB |
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Russian |
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0320-0116 |
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Перспективы применения высокотемпературных сверхпроводников для создания электронных болометров |
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1693 |
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Baeva, E.; Sidorova, M.; Korneev, A.; Goltsman, G. |
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Precise measurement of the thermal conductivity of superconductor |
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2018 |
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Proc. AIP Conf. |
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Proc. AIP Conf. |
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1936 |
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1 |
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020003 (1 to 4) |
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NbN SSPD, SNSPD |
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Measuring the thermal properties such as the heat capacity provide information about intrinsic mechanisms operated inside. In general, the ratio between electron and phonon specific heat Ce/Cp shows how the absorbed energy shared between electron and phonon subsystems. In this work we make estimations for amplitude-modulated absorption of THz radiation technique for investigation of the ratio Ce/Cp in superconducting Niobium Nitride (NbN) at T = Tc. Our results indicates that experimentally the frequency of modulation has to be extra large to extract the quantity. We perform a new technique allowed to work at low frequency with accurately measurement of absorbed power. |
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doi:10.1063/1.5025441 |
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1311 |
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Shcherbatenko, M.; Lobanov, Y.; Semenov, A.; Kovalyuk, V.; Korneev, A.; Ozhegov, R.; Kazakov, A.; Voronov, B.M.; Goltsman, G.N. |
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Potential of a superconducting photon counter for heterodyne detection at the telecommunication wavelength |
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2016 |
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Opt. Express |
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Opt. Express |
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24 |
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26 |
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30474-30484 |
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NbN SSPD mixer, SNSPD |
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Here, we report on the successful operation of a NbN thin film superconducting nanowire single-photon detector (SNSPD) in a coherent mode (as a mixer) at the telecommunication wavelength of 1550 nm. Providing the local oscillator power of the order of a few picowatts, we were practically able to reach the quantum noise limited sensitivity. The intermediate frequency gain bandwidth (also referred to as response or conversion bandwidth) was limited by the spectral band of a single-photon response pulse of the detector, which is proportional to the detector size. We observed a gain bandwidth of 65 MHz and 140 MHz for 7 x 7 microm2 and 3 x 3 microm2 devices, respectively. A tiny amount of the required local oscillator power and wide gain and noise bandwidths, along with unnecessary low noise amplification, make this technology prominent for various applications, with the possibility for future development of a photon counting heterodyne-born large-scale array. |
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1094-4087 |
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PMID:28059394 |
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1207 |
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Gershenzon, E.; Goltsman, G.; Orlov, L.; Ptitsina, N. |
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Population of excited-states of small admixtures in germanium |
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1978 |
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Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
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Izv. Akad. Nauk SSSR, Seriya Fizicheskaya |
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42 |
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6 |
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1154-1159 |
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Ge, excited states, admixtures |
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Mezhdunarodnaya Kniga 39 Dimitrova Ul., 113095 Moscow, Russia |
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1723 |
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