Design of optically coupled superconducting on-chip fourier transform spectrometers for cmb science [Poster]

Steiger, Aaron, Basu Thakur, Ritoban, Klimovich, Nikita, Shu, Shibo, Rapaport, Eitan, Kim, Junhan, Day, Peter K., Chang, Tzu-Ching, Dore, Olivier, Shirokoff, Erik, Barry, Peter, Mauskopf, Philip, Faramarzi, Farzad, Linden, Emily, Bell, Christina, Zmuidzinas, Jonas and Gao, Jian-Rong 2022. Design of optically coupled superconducting on-chip fourier transform spectrometers for cmb science [Poster]. Presented at: SPIE Astronomical Telescopes + Instrumentation, 2022, Montreal, Canada, 17-23 July 2022. Proc. SPIE PC12190, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy XI. SPIE, 10.1117/12.2650512

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Abstract

Superconducting On-chip Fourier Transform Spectrometers (SOFTS) are broadband, ultracompact and electronic interferometers that can operate in GHz-THz bands. Here we detail the design of a single pixel architecture for a 210 GHz (140 GHz - 280 GHz) SOFTS pixel coupled to a conical feedhorn and lumped element kinetic inductance detector. Our ongoing work on Ka-band and W-band SOFTS focuses on interferometer development, and this 210 GHz effort extends that with realizable optical and detector coupling architectures. SOFTS will enable kilo-pixel spectro-imaging focal planes enhancing sub-millimeter science. Particular applications include cluster astrophysics, cosmic microwave background (CMB) science, and line intensity mapping. The material presented here is vital in constructing kilo-pixel spectro-imagers, and our choice of frequencies here is motivated by Sunyaev–Zeldovich studies of galaxy clusters using the CMB as a backlight.

Item Type:	Conference or Workshop Item - published (Other)
Date Type:	Published Online
Status:	Published
Schools:	Schools > Physics and Astronomy
Publisher:	SPIE
Last Modified:	13 Aug 2026 14:45
URI:	https://orca.cardiff.ac.uk/id/eprint/155689

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