| Records |
| Author |
Prober, D. E. |
| Title |
Superconducting terahertz mixer using a transition-edge microbolometer |
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Journal Article |
| Year |
1993 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
62 |
Issue |
17 |
Pages |
2119-2121 |
| Keywords |
HEB mixer, NbN, TES |
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Recommended by Klapwijk |
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244 |
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Khosropanah, P.; Gao, J. R.; Laauwen, W. M.; Hajenius, M; Klapwijk, T. M. |
| Title |
Low noise NbN hot electron bolometer mixer at 4.3 THz |
Type |
Journal Article |
| Year |
2007 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
91 |
Issue |
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Pages |
221111 (1 to 3) |
| Keywords |
NbN HEB mixers, NbN, contacts cleaning |
| Abstract |
We have studied the sensitivity of a superconducting NbN hot electron bolometer mixer integrated with a spiral antenna at 4.3 THz. Using hot/cold blackbody loads and a beam splitter all in vacuum, we measured a double sideband receiver noise temperature of 1300 K at the optimum local oscillator (LO) power of 330 nW, which is about 12 times the quantum noise (hnu/2kB). Our result indicates that there is no sign of degradation of the mixing process at the superterahertz frequencies. Moreover, a measurement method is introduced which allows us for an accurate determination of the sensitivity despite LO power fluctuations. |
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584 |
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Gershenson, M. E.; Gong, D.; Sato, T.; Karasik, B. S.; Sergeev, A. V. |
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Millisecond electron-phonon relaxation in ultrathin disordered metal films at millikelvin temperatures |
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Journal Article |
| Year |
2001 |
Publication |
Appl. Phys. Lett. |
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| Volume |
79 |
Issue |
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Pages |
2049-2051 |
| Keywords |
HEB detector, FIR, far infrared |
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RPLAB @ s @ heb_eph_interaction_Gershenzon |
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315 |
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Jackson, B. D.; Baryshev, A. M.; de Lange, G.; Gao, J. R.; Shitov, S. V.; Iosad, N. N.; Klapwijk, T. M. |
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Low-noise 1 THz superconductor-insulator-superconductor mixer incorporating a NbTiN/SiO2/Al tuning circuit |
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Journal Article |
| Year |
2001 |
Publication |
Appl. Phys. Lett. |
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79 |
Issue |
3 |
Pages |
436 |
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RPLAB @ s @ sis_Jackson_2001 |
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314 |
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Kataoka, T; Kajikawa, K.; Kitagawa, J.; Kadoya, Y; Takemura, Y. |
| Title |
Improved sensitivity of terahertz detection by GaAs photoconductive antennas excited at 1560 nm |
Type |
Journal Article |
| Year |
2010 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
97 |
Issue |
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Pages |
201110 (1-3) |
| Keywords |
photoconductive antenna (PCA) |
| Abstract |
The terahertz detection by photoconductive antennas (PCAs) based on low-temperature grown (LTG) GaAs with 1.5 μm pulse excitation was revisited. We found that the detection efficiency can be improved by a factor of 10 (20 dB) by reducing the excitation spot size and the gap length of the PCA, maintaining the low noise feature of the PCA on LTG GaAs. As a result, the signal-to-noise ratio higher than 50 dB was obtained at a reasonable incident power of 9.5 mW, suggesting that the scheme is promising for the detection of terahertz waves in practical time domain systems. |
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904 |
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Gao, J. R.; Hovenier, J. N.; Yang, Z. Q.; Baselmans, J. J. A.; Baryshev, A.; Hajenius, M.; Klapwijk, T. M.; Adam, A. J. L.; Klaassen, T. O.; Williams, B. S.; Kumar, S.; Hu, Q.; Reno, J. L. |
| Title |
Terahertz heterodyne receiver based on a quantum cascade laser and a superconducting bolometer |
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Journal Article |
| Year |
2005 |
Publication |
Appl. Phys. Lett. |
Abbreviated Journal |
Appl. Phys. Lett. |
| Volume |
86 |
Issue |
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Pages |
244104 (1 to 3) |
| Keywords |
HEB, QCL |
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We report the first demonstration of an all solid-stateheterodyne receiver that can be used for high-resolution spectroscopy above 2THz suitable for space-based observatories. The receiver uses a NbN superconducting hot-electron bolometer as mixer and a quantum cascade laser operating at 2.8THz as local oscillator. We measure a double sideband receiver noise temperature of 1400K at 2.8THz and 4.2K, and find that the free-running QCL has sufficient power stability for a practical receiver, demonstrating an unprecedented combination of sensitivity and stability. |
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905 |
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Bueno, J.; Coumou, P. C. J. J.; Zheng, G.; de Visser, P. J.; Klapwijk, T. M.; Driessen, E. F. C.; Doyle, S.; Baselmans, J. J. A |
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Anomalous response of superconducting titanium nitride resonators to terahertz radiation |
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Journal Article |
| Year |
2014 |
Publication |
Appl. Phys. Lett. |
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105 |
Issue |
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Pages |
192601 (1 to 5) |
| Keywords |
KID, TiN, NEP, disordered superconductors, inhomogeneous state |
| Abstract |
We present an experimental study of kinetic inductance detectors (KIDs) fabricated of atomic layer deposited TiN films and characterized at radiation frequencies of 350 GHz. The responsivity to radiation is measured and found to increase with the increase in radiation powers, opposite to what is expected from theory and observed for hybrid niobium titanium nitride/aluminium (NbTiN/Al) and all-aluminium (all-Al) KIDs. The noise is found to be independent of the level of the radiation power. The noise equivalent power improves with higher radiation powers, also opposite to what is observed and well understood for hybrid NbTiN/Al and all-Al KIDs. We suggest that an inhomogeneous state of these disordered superconductors should be used to explain these observations. |
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1068 |
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