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Superconducting Hot-Electron Bolometer Mixer for Terahertz Heterodyne Receivers

Alexei D. Semenov, Heinz‐Wilhelm Hübers, Heiko Richter +4 more

Softwaretechnik-TrendsApr 1, 20031 citation

Terahertz heterodyne receivers based on superconductive hot-electron bolometer mixers

Matvey I. Finkel, S. N. Maslennikov, Gregory N Gol'tsman

Radiophysics and Quantum ElectronicsOct 1, 20052 citations

New trend in terahertz detection: high Tc superconducting hot electron bolometer technology may exhibits advantages vs. low Tc devices

Alain Kreisler, Annick F. Degardin, Mario Aurino +6 more

May 1, 20070 citations

Heterodyne detection of THz radiation with a superconducting hot-electron bolometer mixer

Alexei D. Semenov, Yu. P. Gousev, Rainer S. Nebosis +6 more

We report on the use of a superconducting hot-electron bolometer mixer for heterodyne detection of terahertz radiation. Radiation with a wavelength of 119 μm was coupled to the mixer, a NbN microbridge, by a hybrid quasioptical antenna consisting of an extended hyperhemispherical lens and a planar logarithmic spiral antenna. We found, at an intermediate frequency of 1.5 GHz, a system double side band noise temperature of ≊40 000 K and conversion losses of 25 dB. We also discuss the possibilities of further improvement of the mixer performance.We report on the use of a superconducting hot-electron bolometer mixer for heterodyne detection of terahertz radiation. Radiation with a wavelength of 119 μm was coupled to the mixer, a NbN microbridge, by a hybrid quasioptical antenna consisting of an extended hyperhemispherical lens and a planar logarithmic spiral antenna. We found, at an intermediate frequency of 1.5 GHz, a system double side band noise temperature of ≊40 000 K and conversion losses of 25 dB. We also discuss the possibilities of further improvement of the mixer performance.

Applied Physics LettersJul 8, 199616 citations

Terahertz detectors based on superconducting hot electron bolometers

Yi Jiang, Biaobing Jin, Weiwei Xu +3 more

Science China Information SciencesDec 29, 201116 citations

Noise Temperature and Beam Pattern of a Quasioptical Heterodyne Receiver based on NbN Hot Electron Bolometer Mixer at 5.25 THz

W. Zhang, P. Khosropanah, J. R. Gao +4 more

We report the measured sensitivities of a superconducting NbN hot electron bolometer (HEB) heterodyne receiver at 5.25 THz. The terahertz (THz) radiation is quasioptically coupled to the HEB mixer with a lens and a spiral antenna. Using a measurement setup with black body calibration sources and a beam splitter in vacuum, and an antireflection coated Si lens, we obtained a double sideband (DSB) receiver noise temperature ( ) of 1150 K, which is 4.5 times h/k (the quantum limit). In addition, the measured far field beam patterns of the integrated lens antenna from 2.5 THz to 5.3 THz show collimated beams that make it reliable to measure using the vacuum setup. Our experimental results in combination with an antenna-to-bolometer coupling simulation suggest that the HEB mixer can work well at least up to 6 THz, suitable for next generation of high-resolution spectroscopic space telescopes and, in particular, for the detection of the neutral atomic oxygen (OI) line at 4.7 THz. DSB rec TWe report the measured sensitivities of a superconducting NbN hot electron bolometer (HEB) heterodyne receiver at 5.25 THz. The terahertz (THz) radiation is quasioptically coupled to the HEB mixer with a lens and a spiral antenna. Using a measurement setup with black body calibration sources and a beam splitter in vacuum, and an antireflection coated Si lens, we obtained a double sideband (DSB) receiver noise temperature ( ) of 1150 K, which is 4.5 times h/k (the quantum limit). In addition, the measured far field beam patterns of the integrated lens antenna from 2.5 THz to 5.3 THz show collimated beams that make it reliable to measure using the vacuum setup. Our experimental results in combination with an antenna-to-bolometer coupling simulation suggest that the HEB mixer can work well at least up to 6 THz, suitable for next generation of high-resolution spectroscopic space telescopes and, in particular, for the detection of the neutral atomic oxygen (OI) line at 4.7 THz. DSB rec T

Softwaretechnik-TrendsMar 1, 20100 citations

Lens-Antenna Coupled Superconducting Hot-Electron Bolometers for Terahertz Heterodyne Detection and Imaging

Abstract

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Lens-Antenna Coupled Superconducting Hot-Electron Bolometers for Terahertz Heterodyne Detection and Imaging

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