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Optical Response of...
Optical Response of a Cold-Electron Bolometer Array Integrated in a 345-GHz Cross-Slot Antenna
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- Tarasov, Mikhail, 1954 (författare)
- National Research University of Electronic Technology (MIET)
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- Kuzmin, Leonid, 1946 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Edelman, Valerian S. (författare)
- Russian Academy of Sciences
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- Mahashabde, Sumedh, 1985 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- de Bernardis, P. (författare)
- Universita degli Studi di Roma la Sapienza,Sapienza University of Rome
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(creator_code:org_t)
- 2011
- 2011
- Engelska.
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Ingår i: IEEE Transactions on Applied Superconductivity. - 1558-2515 .- 1051-8223. ; 21:6, s. 3635-3639
- Relaterad länk:
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http://publications.... (primary) (free)
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Ämnesord
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- Two series/parallel arrays of ten cold-electronbolometers with superconductor–insulator–normal tunnel junctionswere integrated in orthogonal ports of a cross-slot antenna.To increase the dynamic range of the receiver, all single bolometersin an array are connected in parallel for the microwavesignal by capacitive coupling. To increase the output response,bolometers are connected in series for dc bias. With the measuredvoltage-to-temperature response of 8.8 μV/mK, absorbervolume of 0.08 μm3, and output noise of about 10 nV/Hz1/2,we estimated the dark electrical noise equivalent power (NEP)as NEP = 6∗ 10−18 W/Hz1/2. The optical response down toNEP = 2∗ 10−17 W/Hz1/2 was measured using a hot/cold loadas a radiation source and a sample temperature down to 100 mK.The fluctuation sensitivity to the radiation source temperature is1.3 ∗ 10−4 K/Hz1/2. A dynamic range over 43 dB was measuredusing a backward-wave oscillator, a variable polarization gridattenuator, and cold filters/attenuators.
Ämnesord
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Nyckelord
- cold-electron bolometers (CEBs)
- superconducting integrated circuits
- cross-slot antennas
- Bolometer arrays
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- ref (ämneskategori)
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