| Records |
| Author |
Zhang, W.; Miao, W.; Yao, Q. J.; Lin, Z. H.; Shi, S. C.; Gao, J. R.; Goltsman, G. N. |
| Title |
Spectral response and noise temperature of a 2.5 THz spiral antenna coupled NbN HEB mixer |
Type |
Journal Article |
| Year |
2012 |
Publication |
Phys. Procedia |
Abbreviated Journal |
Phys. Procedia |
| Volume |
36 |
Issue |
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Pages |
334-337 |
| Keywords |
NbN HEB mixer |
| Abstract |
We report on a 2.5 THz spiral antenna coupled NbN hot electron bolometer (HEB) mixers, fabricated with in-situ process. The receiver noise temperature with lowest value of 1180 K is in good agreement with calculated quantum efficiency factor as a function of bias voltage. In addition, the measured spectral response of the spiral antenna coupled NbN HEB mixer shows broad frequency coverage of 0.8-3 THz, and corrected response for optical losses, FTS, and coupling efficiency between antenna and bolometer falls with frequency due to diffraction-limited beam of lens/antenna combination. |
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1875-3892 |
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1381 |
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| Author |
Pentin, I. V.; Smirnov, A. V.; Ryabchun, S. A.; Gol’tsman, G. N.; Vaks, V. L.; Pripolzin, S. I.; Paveliev, D. G. |
| Title |
Heterodyne source of THz range based on semiconductor superlattice multiplier |
Type |
Conference Article |
| Year |
2011 |
Publication |
IRMMW-THz |
Abbreviated Journal |
IRMMW-THz |
| Volume |
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Issue |
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Pages |
1-2 |
| Keywords |
NbN HEB mixer, superlattice |
| Abstract |
We present the results of our studies of the possibility of developing a heterodyne receiver incorporating a hot-electron bolometer mixer as the detector and a semiconductor superlattice multiplier driven by a reference synthesizer as the local oscillator. We observe that such a local oscillator offers enough power in the terahertz range to pump the HEB into the operating state. |
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no |
| Call Number |
6105209 |
Serial |
1384 |
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Maslennikova, A.; Larionov, P.; Ryabchun, S.; Smirnov, A.; Pentin, I.; Vakhtomin, Yu.; Smirnov, K.; Kaurova, N.; Voronov, B.; Goltsman, G. |
| Title |
Noise equivalent power and dynamic range of NBN hot-electron bolometers |
Type |
Conference Article |
| Year |
2011 |
Publication |
Proc. MLPLIT |
Abbreviated Journal |
Proc. MLPLIT |
| Volume |
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Issue |
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Pages |
146-148 |
| Keywords |
NbN HEB |
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| Address |
Suzdal / Vladimir (Russia) |
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Modern laser physics and laser-information technologies for science and manufacture |
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1st international russian-chinese conference / youthschool-workshop |
| Notes |
September 23-28, 2011 |
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no |
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Serial |
1386 |
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| Author |
Tret’yakov, I. V.; Ryabchun, S. A.; Kaurova, N. S.; Larionov, P. A.; Lobastova, A. A.; Voronov, B. M.; Finkel, M. I.; Gol’tsman, G. N. |
| Title |
Optimum absorbed heterodyne power for superconducting NbN hot-electron bolometer mixer |
Type |
Journal Article |
| Year |
2010 |
Publication |
Tech. Phys. Lett. |
Abbreviated Journal |
Tech. Phys. Lett. |
| Volume |
36 |
Issue |
12 |
Pages |
1103-1105 |
| Keywords |
NbN HEB mixer |
| Abstract |
Absorbed heterodyne power has been measured in a low-noise broadband hot-electron bolometer (HEB) mixer for the terahertz range, operating on the effect of electron heating in the resistive state of an ultrathin superconducting NbN film. It is established that the optimum absorbed heterodyne power for the HEB mixer operating at 2.5 THz is about 100 nW. |
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| ISSN |
1063-7850 |
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no |
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Serial |
1389 |
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| Author |
Ozhegov, R. V.; Gorshkov, K. N.; Okunev, O. V.; Gol’tsman, G. N. |
| Title |
Superconducting hot-electron bolometer mixer as element of thermal imager matrix |
Type |
Journal Article |
| Year |
2010 |
Publication |
Tech. Phys. Lett. |
Abbreviated Journal |
Tech. Phys. Lett. |
| Volume |
36 |
Issue |
11 |
Pages |
1006-1008 |
| Keywords |
HEB mixers |
| Abstract |
The possibility of using a matrix of sensitive elements on a 12-mm-diameter hyperhemispherical lens in a thermal imager operating in the terahertz range has been studied. Dimensions of a lens region acceptable for arrangement of the matrix, in which the receiver noise temperature varies within 16% of the mean value, are determined to be 3.3% of the lens diameter. Deviations of the main lobe of the directivity pattern are evaluated, which amount to ±1.25° relative to the direction toward the optimum position of a mixer. The fluctuation sensitivity of the receiver measured in experiment is 0.5 K at a frequency of 300 GHz. |
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1063-7850 |
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no |
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Serial |
1390 |
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| Author |
Palma, F.; Teppe, F.; Fatimy, A. E.; Green, R.; Xu, J.; Vachontin, Y.; Tredicucci, A.; Goltsman, G.; Knap, W. |
| Title |
THz communication system based on a THz quantum cascade laser and a hot electron bolometer |
Type |
Conference Article |
| Year |
2010 |
Publication |
35th Int. Conf. Infrared, Millimeter, and Terahertz Waves |
Abbreviated Journal |
35th Int. Conf. Infrared, Millimeter, and Terahertz Waves |
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Issue |
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Pages |
11623798 (1 to 2) |
| Keywords |
QCL, HEB detector |
| Abstract |
We present the experimental study of the direct emission – detection system based on the THz Quantum Cascade Laser as a source and Hot Electron Bolometer (HEB) detector – in view of its application as an optical communication system. We show that the system can efficiently transmit the QCL Terahertz pulses. We estimate the maximal modulation speed of the system to be about several GHz and show that it is limited only by the QCL pulse power supply, detector amplifier and connection line/wires parameters. |
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no |
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Serial |
1391 |
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| Author |
Goltsman, G. |
| Title |
Superconducting NbN hot-electron bolometer mixer, direct detector and single-photon counter: from devices to systems |
Type |
Report |
| Year |
2009 |
Publication |
2-nd Int. Conf. EUROFLUX |
Abbreviated Journal |
2-nd Int. Conf. EUROFLUX |
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HEB, SSPD, SNSPD |
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Avignon, France |
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| Notes |
Provided by the SAO/NASA Astrophysics Data System |
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no |
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Serial |
1398 |
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| Author |
Cherednichenko, S.; Drakinskiy, V.; Lecomte, B.; Dauplay, F.; Krieg, J.-M.; Delorme, Y.; Feret, A.; Hübers, H.-W.; Semenov, A.D.; Gol’tsman, G.N. |
| Title |
Terahertz heterodyne array based on NbN HEB mixers |
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Abstract |
| Year |
2008 |
Publication |
Proc. 19th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
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Issue |
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Pages |
43 |
| Keywords |
NbN HEB mixers array |
| Abstract |
A 16 pixel heterodyne receiver for 2.5 THz is been developed based on NbN superconducting hot-electron bolometer (HEB) mixers. The receiver uses a quasioptical RF coupling approach where HEB mixers are integrated into double dipole antennas on 1.5μm thick Si3N4 / SiO2 membranes. Miniature mirrors (one per pixel) and back short for the antenna were used to design the output mixer beam profile. The camera design allows all 16 pixel IF readout in parallel. The gain bandwidth of the HEB mixers on Si3N4 / SiO 2 membranes was found to be about 3 GHz, when an MgO buffer layers is applied on the membrane. We will also present the progress in the camera heterodyne tests. |
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no |
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Serial |
1411 |
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| Author |
Zhang, W.; Li, N.; Jiang, L.; Ren, Y.; Yao, Q.-J.; Lin, Z.-H.; Shi, S.-C.; Voronov, B. M.; Gol’tsman, G. N. |
| Title |
Dependence of noise temperature of quasi-optical superconducting hot-electron bolometer mixers on bath temperature and optical-axis displacement |
Type |
Conference Article |
| Year |
2008 |
Publication |
Proc. SPIE |
Abbreviated Journal |
Proc. SPIE |
| Volume |
6840 |
Issue |
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Pages |
684007 (1 to 8) |
| Keywords |
NbN HEB mixers, noise temperature, LO power |
| Abstract |
It is known that the increase of bath temperature results in the decrease of critical current of superconducting hot-electron bolometer (HEB) mixers owing to the depression of superconductivity, thus leading to the degradation of the mixer’s sensitivity. Here we report our study on the effect of bath temperature on the heterodyne mixing performance of quasi-optical superconducting NbN HEB mixers incorporated with a two-arm log-spiral antenna. The correlation between the bath temperature, critical current, LO power requirement and noise temperature is investigated at 0.5 THz. Furthermore, the heterodyne mixing performance of quasi-optical superconducting NbN HEB mixers is examined while there is an optical-axis displacement between the center of the extended hemispherical silicon lens and the superconducting NbN HEB device, which is placed on the back of the lens. Detailed experimental results and analysis are presented. |
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Spie |
Place of Publication |
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Editor |
Zhang, C.; Zhang, X.-C. |
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Terahertz Photonics |
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no |
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Serial |
1415 |
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Chen, J.; Kang, L.; Jin, B. B.; Xu, W. W.; Wu, P. H.; Zhang, W.; Jiang, L.; Li, N.; Shi, S. C.; Gol'tsman, G. N. |
| Title |
Properties of terahertz superconducting hot electron bolometer mixers |
Type |
Journal Article |
| Year |
2008 |
Publication |
Int. J. Terahertz Sci. Technol. |
Abbreviated Journal |
Int. J. Terahertz Sci. Technol. |
| Volume |
1 |
Issue |
1 |
Pages |
37-41 |
| Keywords |
NbN HEB mixers, noise temperature |
| Abstract |
A quasi-optical superconducting niobium nitride (NbN) hot electron bolometer (HEB) mixer has been fabricated and measured in the terahertz (THz) frequency range of 0.5~2.52 THz. A receiver noise temperature of 2000 K at 2.52 THz has been obtained for the mixer without corrections. Also, the effect of a Parylene C anti-reflection (AR) coating on the silicon (Si) lens has been studied. |
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1417 |
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