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Design and performance of a dual polarizing detector system for broadband astronomical spectroscopy at submillimeter wavelengths

Naylor, D. A., Gom, B. G., Ade, Peter A. R. and Davis, J. E. 1999. Design and performance of a dual polarizing detector system for broadband astronomical spectroscopy at submillimeter wavelengths. Review of Scientific Instruments 70 (10) , pp. 4097-4109. 10.1063/1.1149304

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Abstract

The design and performance of a dual polarizing bolometer detector system for use with a polarizing Fourier transform spectrometer to conduct broadband astronomical spectroscopy at submillimeter wavelengths is presented. The system features a fully differential electronics design which virtually eliminates common mode noise. The optical design efficiently rejects unwanted radiation, both spectrally and spatially, while minimizing the effects of resonant optical cavities. The system is cooled by an efficient, closed cycle 4He–3He refrigerator which is cycled under computer control. The noise performance of the system is determined from analysis of electrical, optical, and spectral measurements, and the results are compared with a theoretical bolometer model.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Uncontrolled Keywords: submillimetre wave spectroscopy, Fourier transform spectrometers, astronomical spectra, bolometers, submillimetre wave detectors, optical polarisers, astronomical instruments
Publisher: American Institute of Physics
ISSN: 0034-6748
Last Modified: 04 Jun 2017 04:29
URI: http://orca.cf.ac.uk/id/eprint/40004

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