Characterization of aerogel scattering filters for astronomical telescopes

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https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12190/121902I/Characterization-of-aerogel-scattering-filters-for-astronomical-telescopes/10.1117/12.2627341.full?SSO=1

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https://doi.org/10.1117/12.2627341
 http://hdl.handle.net/11603/25542

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UMBC Center for Space Sciences and Technology (CSST) / Center for Research and Exploration in Space Sciences & Technology II (CRSST II)
UMBC Faculty Collection

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Author/Creator ORCID

https://orcid.org/0000-0001-9238-4918

Date

2022-08-31

Type of Work

conference papers and proceedings
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Citation of Original Publication

Alyssa Barlis, Stefan Arseneau, Charles L. Bennett, Thomas Essinger-Hileman, Haiquan Guo, Kyle R. Helson, Tobias Marriage, Manuel A. Quijada, Ariel E. Tokarz, Stephanie L. Vivod, and Edward J. Wollack "Characterization of aerogel scattering filters for astronomical telescopes", Proc. SPIE 12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI, 121902I (31 August 2022); https://doi.org/10.1117/12.2627341

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This work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
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Abstract

We have developed a suite of novel infrared-blocking filters made by embedding scattering particles in a polymer aerogel substrate. Our developments allow us to tune the spectral performance of the filters based on both the composition of the base aerogel material and the properties of the scattering particles. Our filters are targeted for use in a variety of applications, from ground-based CMB experiments to planetary science probes. We summarize the formulations we have fabricated and tested to date, including several polyimide base aerogel formulations incorporating a range of size distributions of diamond scattering particles. We also describe the spectral characterization techniques used to measure the filters' optical properties, including the development of a mm-wave Fourier transform spectrometer testbed.