Experimental study of a SINIS detector response time at 350 GHz signal frequency
Paper in proceeding, 2018
Response time constant of a SINIS bolometer integrated in an annular ring antenna was measured at a bath temperature of 100 mK. Samples comprising superconducting aluminium electrodes and normal-metal Al/Fe strip connected to electrodes via tunnel junctions were fabricated on oxidized Si substrate using shadow evaporation. The bolometer was illuminated by a fast black-body radiation source through a band-pass filter centered at 350 GHz with a passband of 7 GHz. Radiation source is a thin NiCr film on sapphire substrate. For rectangular 10÷100 μs current pulse the radiation front edge was rather sharp due to low thermal capacitance of NiCr film and low thermal conductivity of substrate at temperatures in the range 1-4 K. The rise time of the response was ∼1-10 μs. This time presumably is limited by technical reasons: high dynamic resistance of series array of bolometers and capacitance of a long twisted pair wiring from SINIS bolometer to a room-Temperature amplifier.
Author
S. Lemzyakov
Moscow Institute of Physics and Technology
Russian Academy of Sciences
Mikhail Tarasov
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
National Research University of Electronic Technology (MIET)
Moscow Institute of Physics and Technology
Russian Academy of Sciences
Sumedh Mahashabde
University of Oxford
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
R. Yusupov
National Research University of Electronic Technology (MIET)
Moscow Institute of Physics and Technology
Leonid Kuzmin
Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics
Valerian S. Edelman
Russian Academy of Sciences
Journal of Physics: Conference Series
17426588 (ISSN) 17426596 (eISSN)
Vol. 969 1 012081
28th International Conference on Low Temperature Physics, LT 2018
Gothenburg, Sweden,
Gothenburg, Sweden,
Arrays of Ultrasensitive Cold-Electron Bolometers for CMB Measurements - Test of Immunity of CEBs towards Cosmic Rays on Olimpo
Swedish National Space Board (196/15), 2016-01-01 -- 2016-12-31.
Subject Categories
Inorganic Chemistry
Other Electrical Engineering, Electronic Engineering, Information Engineering
Condensed Matter Physics
DOI
10.1088/1742-6596/969/1/012081