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Compact Radiative Control Structures for Millimeter AstronomyWe have designed, fabricated, and tested compact radiative control structures, including antireflection coatings and resonant absorbers, for millimeter through submillimeter wave astronomy. The antireflection coatings consist of micromachined single crystal silicon dielectric sub-wavelength honeycombs. The effective dielectric constant of the structures is set by the honeycomb cell geometry. The resonant absorbers consist of pieces of solid single crystal silicon substrate and thin phosphorus implanted regions whose sheet resistance is tailored to maximize absorption by the structure. We present an implantation model that can be used to predict the ion energy and dose required for obtaining a target implant layer sheet resistance. A neutral density filter, a hybrid of a silicon dielectric honeycomb with an implanted region, has also been fabricated with this basic approach. These radiative control structures are scalable and compatible for use large focal plane detector arrays.
Document ID
20100022018
Acquisition Source
Goddard Space Flight Center
Document Type
Conference Paper
Authors
Brown, Ari D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chuss, David T.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Chervenak, James A.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Henry, Ross M.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Moseley, s. Harvey
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Wollack, Edward J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 24, 2013
Publication Date
January 1, 2010
Subject Category
Astronomy
Meeting Information
Meeting: SPIE Astronomical Telescopes and Instrumentation 2010
Location: San Diego, CA
Country: United States
Start Date: June 27, 2010
End Date: July 2, 2010
Sponsors: International Society for Optical Engineering
Distribution Limits
Public
Copyright
Public Use Permitted.
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