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Proceedings Paper

An automated test system for terahertz receiver characterization
Author(s): Linda C. Kuenzi; Christopher E. Groppi; Caleb H. Wheeler; Hamdi Mani
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Paper Abstract

An automated test system was developed to characterize detectors for the Kilopixel Array Pathfinder Project (KAPPa), a 16-pixel 2D integrated heterodyne focal plane array. Although primarily designed for KAPPa, the system can be used with other instruments to automate tests that might be tedious and time-consuming by hand. Mechanical components include an adjustable structure of aluminum t-slot framing that supports a rotating chopper. Driven by a stepper motor, the wheel alternates between blackbodies at room temperature and 77 K. The cold load consists of absorbing material submerged in liquid nitrogen in an open Styrofoam cooler. Python scripts control the mechanical system, interface with receiver components, and process data. Test system operation was verified by sweeping the local oscillator frequency with a Virginia Diodes room temperature receiver. The system was then integrated with the KAPPa receiver to allow complete and automated testing of all array pixels with minimal user intervention.

Paper Details

Date Published: 23 July 2014
PDF: 8 pages
Proc. SPIE 9153, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII, 91532C (23 July 2014); doi: 10.1117/12.2054849
Show Author Affiliations
Linda C. Kuenzi, Arizona State Univ. (United States)
Christopher E. Groppi, Arizona State Univ. (United States)
Caleb H. Wheeler, Arizona State Univ. (United States)
Hamdi Mani, Arizona State Univ. (United States)


Published in SPIE Proceedings Vol. 9153:
Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy VII
Wayne S. Holland; Jonas Zmuidzinas, Editor(s)

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