Nie, Rong, Filippini, Jeffrey, Brooks, Elyssa, Barry, Peter, Connors, Jake, Gradziel, Marcin, Mercado, Dale, Razavimaleki, Vesal, Shirokoff, Erik, Spencer, Locke, Tramm, Serena, Trappe, Neil and Zemcov, Michael
2024.
A vacuum waveguide filter bank spectrometer for far-infrared astrophysics.
Journal of Low Temperature Physics
216
(1-2)
, pp. 408-416.
10.1007/s10909-024-03166-2
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Abstract
Traditional technologies for far-infrared (FIR) spectroscopy generally involve bulky dispersive optics. Integrated filter bank spectrometers promise more compact designs, but implementations using superconducting transmission line networks become lossy at terahertz frequencies. We describe a novel on-chip spectrometer architecture designed to extend this range. A filter bank spectrometer is implemented using vacuum waveguide etched into a silicon wafer stack. A single trunk line feeds an array of resonant cavities, each coupled to a kinetic inductance detector fabricated on an adjacent wafer. We discuss the design and fabrication of a prototype implementation, initial test results at ambient temperature, and prospects for future development.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Physics and Astronomy |
Publisher: | Springer |
ISSN: | 0022-2291 |
Date of First Compliant Deposit: | 5 July 2024 |
Date of Acceptance: | 21 May 2024 |
Last Modified: | 05 Aug 2024 13:41 |
URI: | https://orca.cardiff.ac.uk/id/eprint/170376 |
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