Gousev, Y. P. and Semenov, A. D. and Pechen, E. V. and Varlashkin, A. V. and Nebosis, R. S. and Renk, Karl F. (1996) Coupling of terahertz radiation to a high-T-c superconducting hot electron bolometer mixer. APPLIED PHYSICS LETTERS, 69 (5). pp. 691-693. ISSN 0003-6951, 1077-3118
Full text not available from this repository.Abstract
We report on efficient coupling of THz radiation to a high-T-c superconducting hot electron bolometer that is suitable for heterodyne detection. Our quasi-optical system consisted of a planar self-complementary spiral antenna on a dielectric substrate clamped to an extended hyperhemispherical lens. The antenna was integrated into a co-planar line for broadband intermediate frequency matching. Measurements in the homodyne regime at a frequency of 2.5 THz showed a radiation pattern with a beam width of 1 degrees and a coupling efficiency of approximate to 0.1. We measured, at an intermediate frequency of 1.5 GHz, an output noise temperature of approximate to 160 K and estimated for the device, operated in the heterodyne regime, a system noise temperature of approximate to 3X10(5) K. We also discuss possibilities of significant improvement of the sensitivity. (C) 1996 American Institute of Physics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | THIN-FILM; PHOTORESPONSE; TEMPERATURE; RECEIVER |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Alumni or Retired Professors > Group Karl F. Renk |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 04 Jul 2023 07:49 |
| Last Modified: | 04 Jul 2023 07:49 |
| URI: | https://pred.uni-regensburg.de/id/eprint/51593 |
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