Records |
Author |
Merkel, H. F.; Yagoubov, P. A.; Kroug, M.; Khosropanah, P.; Kollberg, E. L.; Gol’tsman, G. N.; Gershenzon, E. M. |
Title |
Noise temperature and absorbed LO power measurement methods for NbN phonon-cooled hot electron bolometric mixers at terahertz frequencies |
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Conference Article |
Year |
1998 |
Publication |
Proc. 28th European Microwave Conf. |
Abbreviated Journal |
Proc. 28th European Microwave Conf. |
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1 |
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Pages |
294-299 |
Keywords |
NbN HEB mixers |
Abstract |
In this paper the absorbed LO power requirements and the noise performance of NbN based phonon-cooled hot electron bolometric (HEB) quasioptical mixers are investigated for RF frequencies in the 0.55-1.1 range The minimal measured DSB noise temperatures are about 500 K at 640 GHz, 600 K at 750 GHz, 850 K at 910 GHz and 1250 K at 1.1 THz. The increase in noise temperature at 1.1THz is attributed to water absorption. The absorbed LO power is measured using a calorimetric approach. The results are subsequently corrected for lattice heating. These values are compared to results of a novel one dimensional hot spot mixer models and to a more traditional isotherm method which tends to underestimate the absorbed LO power for small bias powers. Typically a LO power between 50nW and 100nW is needed to pump the device to the optimal operating point. |
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28th European Microwave Conference |
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1580 |
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Gerecht, E.; Musante, C. F.; Jian, H.; Yngvesson, K. S.; Dickinson, J.; Waldman, J.; Gol'tsman, G. N.; Yagoubov, P. A.; Voronov, B. M.; Gershenzon, E. M. |
Title |
Measured results for NbN phonon-cooled hot electron bolometric mixers at 0.6-0.75 THz, 1.56 THz, and 2.5 THz |
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Conference Article |
Year |
1998 |
Publication |
Proc. 9th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 9th Int. Symp. Space Terahertz Technol. |
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Pages |
105-114 |
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NbN HEB mixers |
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1587 |
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Mann, C. M.; Matheson, D. N.; Ellison, B. N.; Oldfield, M. L.; Moyna, B. P.; Spencer, J. J.; Wilsher, D. S.; Maddison, B. J. |
Title |
On the design and measurement of a 2.5 THz waveguide mixer |
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Conference Article |
Year |
1998 |
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Proc. 9th Int. Symp. Space Terahertz Technol. |
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161 |
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RPLAB @ s @ schottky_Tn_16800_at_2p5THz |
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283 |
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Chouvaev, D.; Kuzmin, L.; Tarasov, M.; Sundquist, P.; Willander, M.; Claeson, T. |
Title |
Normal metal hot-electron microbolometer with Andreev mirrors for THz space applications |
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Conference Article |
Year |
1998 |
Publication |
Proc. 9th Int. Symp. Space Terahertz Technol. |
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Proc. 9th Int. Symp. Space Terahertz Technol. |
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331-335 |
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RPLAB @ s @ det_metal_Andreev_Chouvaev_Shitov |
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285 |
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Tetsu Suzuki; Chris Mann; Takanari Yasui; Hirotomo Fujishima; Koji Mizuno |
Title |
Quasi–integrated planar Schottky barrier diodes for 2.5 THz receivers |
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Conference Article |
Year |
1998 |
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Proc. 9th Int. Symp. Space Terahertz Technol. |
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187 |
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RPLAB @ s @ schottky_Tn_24000_at_2p5THz |
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284 |
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Maddison, B. J.; Martin, R. J.; Oldfield, M. L.; Mann, C. M.; Matheson, D. N.; Ellison, B. N.; Thornton, J.; Hall, W. J.; Lamarre, D. M. |
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A compact 500 GHz planar schottky siode receiver with a wide instantaneous bandwidth |
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1998 |
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Proc. 9th Int. Symp. Space Terahertz Technol. |
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367 |
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RPLAB @ s @ schottky_Tn_4800_at_p5THz |
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286 |
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Author |
Brown, Robert. L. |
Title |
Technical specification of the Millimeter Array |
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Conference Article |
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1998 |
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Proc. SPIE, Advanced Technology MMW, Radio, and Terahertz Telescopes, vol. 3357 |
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231-237 |
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Phillips, Thomas G. |
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Address is unknown |
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RPLAB @ s @ ALMA_tech |
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287 |
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Dahl, H.; Metz, H. J.; Wriedt, T. |
Title |
Light scattering of silver halide crystals |
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Conference Article |
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1998 |
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Proc. 3rd Workshop on Electromagnetic and Light Scattering |
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51-58 |
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Universität Bremen |
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504 |
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Author |
Dieleman, Piter |
Title |
Fundamental limitations of THz niobium and niobiumnitride SIS mixers |
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Book Whole |
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1998 |
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Ph.D. thesis |
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Rijksuniversiteit, Groningen |
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529 |
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Author |
Kawamura, Jonathan; Blundell, Raymond; Tong, C.-Y. Edward; Papa, D. Cosmo; Hunter, Todd R.; Gol'tsman, Gregory; Cherednichenko, Sergei; Voronov, Boris; Gershenzon, Eugene |
Title |
First light with an 800 GHz phonon-cooled HEB mixer receiver |
Type |
Conference Article |
Year |
1998 |
Publication |
Proc. 9th Int. Symp. Space Terahertz Technol. |
Abbreviated Journal |
Proc. 9th Int. Symp. Space Terahertz Technol. |
Volume |
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Pages |
35-43 |
Keywords |
HEB, mixer, LO power, local oscillator power, saturation effect, dynamic range |
Abstract |
Phonon-cooled superconductive hot-electron bolometric (HEB) mixers are incorporated in a waveguide receiver designed to operate near 800 Gliz. The mixer elements are thin-film nio- bium nitride microbridges with dimensions of 4 nm thickness, 0.2 to 0.3 p.m in length and 2 jun in width. At 780 GHz the best receiver noise temperature is 840 K (DSB). The mixer IF bandwidth is 2.0 GHz, the absorbed LO power is —0.1 1.1W. A fixed-tuned version of the re- ceiver was installed at the Submillimeter Telescope Observatory on Mt. Graham, Arizona, to conduct astronomical observations. These observations represent the first time that a receiver incorporating any superconducting HEB mixer has been used to detect a spectral line of celes- tial origin. |
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Pasadena, California, USA |
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572 |
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