[en] A pump experiment of two astronomical heterodyne receivers, a superconductorinsulator-
superconductor SIS receiver at 450 GHz and a hot-electron-bolometer HEB receiver at
750 GHz, is reported. A low-temperature-grown GaAs metal-semiconductor-metal photonic local
oscillator LO was illuminated by two near infrared semiconductor lasers, generating a beat frequency in the submillimeter range. I-V junction characteristics for different LO pump power levels demonstrate that the power delivered by the photomixer is sufficient to pump a SIS and a
HEB mixer. SIS receiver noise temperatures were compared using a conventional solid-state LO anda photonic LO. In both cases, the best receiver noise temperature was identical Tsys=170 K .
Disciplines :
Electrical & electronics engineering
Identifiers :
UNILU:UL-ARTICLE-2009-377
Author, co-author :
Cámara Mayorga, I.; Max-Planck-Institute for Radioastronomy, Auf dem Hügel 69, 53121 Bonn, Germany
Muñoz Pradas, P.; 1. Physics Institute, University of Cologne, Zülpicher Strasse 77, 50937 Cologne, Germany
Michael, E. A.; 1. Physics Institute, University of Cologne, Zülpicher Strasse 77, 50937 Cologne, Germany
Mikulics, M.; 1. Physics Institute, University of Cologne, Zülpicher Strasse 77, 50937 Cologne, Germany
Schmitz, A.; Max-Planck-Institute for Radioastronomy, Auf dem Hügel 69, 53121 Bonn, Germany
van der Wal, P.; Max-Planck-Institute for Radioastronomy, Auf dem Hügel 69, 53121 Bonn, Germany
Kaseman, C.; Max-Planck-Institute for Radioastronomy, Auf dem Hügel 69, 53121 Bonn, Germany
Güsten, R.; Max-Planck-Institute for Radioastronomy, Auf dem Hügel 69, 53121 Bonn, Germany
Jacobs, K.; 1. Physics Institute, University of Cologne, Zülpicher Strasse 77, 50937 Cologne, Germany
Marso, Michel ; Institute of Thin Films and Interfaces (ISG-1), Research Center Jülich, 52425 Jülich, Germany
Lüth, H.; Institute of Thin Films and Interfaces (ISG-1), Research Center Jülich, 52425 Jülich, Germany
Kordoš, P.; Institute of Thin Films and Interfaces (ISG-1), Research Center Jülich, 52425 Jülich, Germany
Language :
English
Title :
Terahertz photonic mixers as local oscillators for hot electron bolometer and superconductor-insulator-superconductor astronomical receivers, ,
Publication date :
2006
Journal title :
Journal of Applied Physics
ISSN :
0021-8979
Publisher :
American Institute of Physics, Melville, United States - New York
