Fabrication of high-T/sub c/ hot-electron bolometric mixers for terahertz applications
| Autor: | A.W. Kleinsasser, Boris S. Karasik, Richard P. Vasquez, K. A. Delin, Michael C. Gaidis, M. J. Burns, William R. McGrath |
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| Rok vydání: | 1997 |
| Předmět: |
Superconductivity
Heterodyne High-temperature superconductivity Materials science Fabrication business.industry Terahertz radiation Bolometer Condensed Matter Physics Electronic Optical and Magnetic Materials law.invention Micrometre Planar law Optoelectronics Electrical and Electronic Engineering business |
| Zdroj: | IEEE Transactions on Appiled Superconductivity. 7:3564-3567 |
| ISSN: | 1051-8223 |
| DOI: | 10.1109/77.622168 |
| Popis: | Superconducting hot-electron bolometers (HEB) represent a promising candidate for heterodyne mixing at frequencies exceeding 1 THz. Nb HEB mixers offer performance competitive with tunnel junctions without the frequency limit imposed by the superconducting energy gap. Although the performance of YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// HEB mixers is not projected to be superior to that of Nb devices, which operate at low temperatures, they introduce the possibility of sensitive, low power heterodyne detectors operating at temperatures approaching 90 K for applications requiring portability and closed-cycle refrigeration. We report on the fabrication and characterization, both DC and RF, of high-T/sub c/ mixers based on ultra-thin (/spl les/20 nm) YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// films patterned to micrometer dimensions and incorporated into 2.5 THz planar mixer circuits. |
| Databáze: | OpenAIRE |
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