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Proceedings Paper

Terahertz frequency multiplier chains based on planar Schottky diodes
Author(s): Frank Maiwald; Erich Schlecht; Alain Maestrini; Goutam Chattopadhyay; John C. Pearson; Dave Pukala; Imran Mehdi
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Paper Abstract

The Herschel Space Observatory (HSO), an ESA cornerstone mission with NASA contribution, will enable a comprehensive study of the galactic and the extra galactic universe. At the heart of this exploration are ultra sensitive coherent detectors for high-resolution spectroscopy. Successful operation of these receivers is predicated on providing a sufficiently powerful local oscillator (LO) source. Historically, a versatile space qualified LO source for frequencies beyond 500 GHz has been difficult if not impossible. This paper will focus on the effort under way to develop, build, characterize and qualify a LO chain to 1200 GHz (Band 5 on HSO) that is based on planar GaAs diodes mounted in waveguide circuits. State-of-the-art performance has been obtained from a three-stage (×2×2×3) multiplier chain that can provide a peak output power of 120 μW (1178 GHz) at room temperature and a peak output power of 190 μW at 1183 GHZ when cooled to 113 K. Implementation of this LO source for the Heterodyne Instrument for Far Infrared (HIFI) one of three instruments on HSO will be discussed in detail.

Paper Details

Date Published: 17 February 2003
PDF: 12 pages
Proc. SPIE 4855, Millimeter and Submillimeter Detectors for Astronomy, (17 February 2003); doi: 10.1117/12.459355
Show Author Affiliations
Frank Maiwald, Jet Propulsion Lab. (United States)
Erich Schlecht, Jet Propulsion Lab. (United States)
Alain Maestrini, Jet Propulsion Lab. (United States)
Goutam Chattopadhyay, Jet Propulsion Lab. (United States)
John C. Pearson, Jet Propulsion Lab. (United States)
Dave Pukala, Jet Propulsion Lab. (United States)
Imran Mehdi, Jet Propulsion Lab. (United States)

Published in SPIE Proceedings Vol. 4855:
Millimeter and Submillimeter Detectors for Astronomy
Thomas G. Phillips; Jonas Zmuidzinas, Editor(s)

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