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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2004, Volume 79, Issue 6, Pages 356–361
(Mi jetpl2260)
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This article is cited in 16 scientific papers (total in 16 papers)
CONDENSED MATTER
Terahertz spectroscopy with a Josephson oscillator and a SINIS bolometer
M. Tarasovab, L. Kuz'mincb, E. Stepantsovdb, I. Agulob, A. Kalabukhovcb, M. Fominskiiab, Z. Ivanovb, T. Claesonb a Institute of Radio Engineering and Electronics, Russian Academy of Sciences
b Chalmers University of Technology, Gothenburg, Sweden
c M. V. Lomonosov Moscow State University
d Institute of Cristallography RAS
Abstract:
The voltage response of a thin-film normal-metal hot-electron bolometer based on a SINIS (superconductor-insulator-normal metal-insulator-superconductor) structure to the radiation of a high-temperature Josephson junction in the terahertz frequency region was measured. Bolometers were integrated with planar log-periodic and double-dipole antennas, and Josephson junctions were integrated with log-periodic antennas. Measurements showed that the Josephson junction at a temperature of 260 mK was overheated by the transport current, so that its electron temperature exceeded 3 K at a bias voltage of 1 mV. The maximum response of a bolometer with a double-dipole antenna was observed at a frequency of 300 GHz, which agreed well with the calculated value. The Josephson radiation was observed at frequencies up to 1.7 THz. The voltage response of a bolometer reached 4×108 V/W, and the total noise-equivalent power reached 1.5×10−17 W/Hz1/2.
Received: 26.01.2004 Revised: 17.02.2004
Citation:
M. Tarasov, L. Kuz'min, E. Stepantsov, I. Agulo, A. Kalabukhov, M. Fominskii, Z. Ivanov, T. Claeson, “Terahertz spectroscopy with a Josephson oscillator and a SINIS bolometer”, Pis'ma v Zh. Èksper. Teoret. Fiz., 79:6 (2004), 356–361; JETP Letters, 79:6 (2004), 298–303
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