Compact radiative control structures for millimeter astronomy

Ari D. Brown; David T. Chuss; James A. Chervenak; Ross M. Henry; S. Harvey Moseley; Edward J. Wollack

doi:10.1117/12.858174

15 July 2010 Compact radiative control structures for millimeter astronomy

Ari D. Brown, David T. Chuss, James A. Chervenak, Ross M. Henry, S. Harvey Moseley, Edward J. Wollack

Proceedings Volume 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V; 77412C (2010) https://doi.org/10.1117/12.858174
Event: SPIE Astronomical Telescopes + Instrumentation, 2010, San Diego, California, United States

Abstract

We 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.

Citation Download Citation

Ari D. Brown, David T. Chuss, James A. Chervenak, Ross M. Henry, S. Harvey Moseley, and Edward J. Wollack "Compact radiative control structures for millimeter astronomy", Proc. SPIE 7741, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy V, 77412C (15 July 2010); https://doi.org/10.1117/12.858174

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