Abstract
We present transmission and loss measurements of 3D printed alumina and reflectance measurement of a sample with 3D printed sub-wavelength structures anti-reflection coatings (SWS-ARC). For a band between 160 and 700 GHz we find an index of refraction n = 3.11 ± 0.01 and loss tan δ = 0.002 ± 0.003. Transmission measurements between 160 and 250 GHz of a sample with SWS-ARC 3D printed on one side give a reduction of reflectance from a maximum of 64% to a maximum of 31% over the band, closely matching predictions. These first measurements of the index and loss over this frequency band suggest that the material could be useful for astrophysical applications.
Original language | English (US) |
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Title of host publication | Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII |
Editors | Jonas Zmuidzinas, Jian-Rong Gao, Jian-Rong Gao |
Publisher | SPIE |
ISBN (Electronic) | 9781510675278 |
DOIs | |
State | Published - 2024 |
Event | Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII 2024 - Yokohama, Japan Duration: Jun 18 2024 → Jun 22 2024 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 13102 |
ISSN (Print) | 0277-786X |
ISSN (Electronic) | 1996-756X |
Conference
Conference | Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XII 2024 |
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Country/Territory | Japan |
City | Yokohama |
Period | 6/18/24 → 6/22/24 |
Bibliographical note
Publisher Copyright:© 2024 SPIE.
Keywords
- 3D Printed
- Alumina
- Anti-reflective Coatings
- Millimeter-wave Optical components
- Sub-Wavelength Structures
- Transmissivity