Terahertz photonic mixers as local oscillators for hot electron bolometer and superconductor-insulator-superconductor astronomical receivers, ,

Cámara Mayorga, I.; Muñoz Pradas, P.; Michael, E. A.; Mikulics, M.; Schmitz, A.; van der Wal, P.; Kaseman, C.; Güsten, R.; Jacobs, K.; Marso, Michel; Lüth, H.; Kordoš, P.

doi:10.1063/1.2336486

Reference : Terahertz photonic mixers as local oscillators for hot electron bolometer and superco...


	Document type :	Scientific journals : Article
	Discipline(s) :	Engineering, computing & technology : Electrical & electronics engineering
	To cite this reference:	http://hdl.handle.net/10993/20406

Title :	Terahertz photonic mixers as local oscillators for hot electron bolometer and superconductor-insulator-superconductor astronomical receivers, ,
Language :	English
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]
Publication date :	2006
Journal title :	Journal of Applied Physics
Publisher :	American Institute of Physics
Volume :	100
Pages :	043116
Peer reviewed :	Yes (verified by ORBi^lu)
ISSN :	0021-8979
City :	Melville
Country :	NY
Abstract :	[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 .
Permalink :	http://hdl.handle.net/10993/20406
DOI :	10.1063/1.2336486

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