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Proceedings Paper

NbN hot-electron bolometer receivers and focal plane arrays for the terahertz range
Author(s): Sigfrid Yngvesson; Eyal Gerecht; Fernando Rodriguez-Morales; John Nicholson; Dazhen Gu; Richard Zannoni; Xin Zhao; Thomas Goyette; William Gorveatt; Jason Dickinson; Jerry Waldman
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Paper Abstract

The next generation of hot electron bolometric (HEB) mixer receivers for terahertz frequencies is under development. In order to improve sensitivity and integration time, terahertz focal plane arrays with HEB elements are required. We have designed, fabricated, and tested a three-element focal plane array with HEB devices. We implemented a quasi-optical power coupling scheme using three elliptical silicon lenses. Recently developed wideband (0.5 GHz to 12 GHz) MMIC low noise amplifiers were directly integrated with HEB devices in a single block. The array was tested using an FIR laser as the LO source and a side band generator as the signal source. This is the first heterodyne array for a frequency above 1 THz, and the suitability of HEB elements in a terahertz FPA has thus been demonstrated. This development is also geared toward investigating new architectures for much larger arrays utilizing HEB elements. Additional issues to be resolved include an improved antenna design for efficient LO injection, compact and low power IF amplifiers, and cryogenic optimization.

Paper Details

Date Published: 8 October 2004
PDF: 8 pages
Proc. SPIE 5498, Millimeter and Submillimeter Detectors for Astronomy II, (8 October 2004); doi: 10.1117/12.552267
Show Author Affiliations
Sigfrid Yngvesson, Univ. of Massachusetts/Amherst (United States)
Eyal Gerecht, Univ. of Massachusetts/Amherst (United States)
Fernando Rodriguez-Morales, Univ. of Massachusetts/Amherst (United States)
John Nicholson, Univ. of Massachusetts/Amherst (United States)
Dazhen Gu, Univ. of Massachusetts/Amherst (United States)
Richard Zannoni, Univ. of Massachusetts/Amherst (United States)
Xin Zhao, Univ. of Massachusetts/Amherst (United States)
Thomas Goyette, Univ. of Massachusetts/Lowell (United States)
William Gorveatt, Univ. of Massachusetts/Lowell (United States)
Jason Dickinson, Univ. of Massachusetts/Lowell (United States)
Jerry Waldman, Univ. of Massachusetts/Lowell (United States)

Published in SPIE Proceedings Vol. 5498:
Millimeter and Submillimeter Detectors for Astronomy II
Jonas Zmuidzinas; Wayne S. Holland; Stafford Withington, Editor(s)

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