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26 November 2023 One-dimensional linear integration technique for THz-band SIS
Yu-Min Fan, Bo-Liang Liu, Ming Yao, Jie Liu, Jin-Biao Zhao, Sheng-Cai Shi, Dong Liu
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Proceedings Volume 12776, Infrared, Millimeter-Wave, and Terahertz Technologies X; 127760R (2023) https://doi.org/10.1117/12.2686640
Event: SPIE/COS Photonics Asia, 2023, Beijing, China
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Abstract
Superconductor-Insulator-Superconductor (SIS) mixers are currently the most widely used detectors in astronomical observations in the terahertz band. To meet the demands of future large-aperture terahertz radio telescopes for multipixel applications, this work focused on the integration technology of a 660 GHz 1×4 one-dimensional linear array SIS mixers. The SIS mixers based on Nb/AlN/NbN twin tunnel junctions. We developed the uniform distribution of local oscillator power by using an integrated waveguide and multi-path local oscillator power distribution network. We also integrated the passive frequency doubler and tripler at low temperature, and integrated four low-noise amplifiers with the mixer in the same block, resulting in a more compact structure. As a result, we successfully realized the simultaneous operation of four mixers in a cryogenic Dewar. This paper will provide a detailed description of the relevant design and testing results.
(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Yu-Min Fan, Bo-Liang Liu, Ming Yao, Jie Liu, Jin-Biao Zhao, Sheng-Cai Shi, and Dong Liu "One-dimensional linear integration technique for THz-band SIS", Proc. SPIE 12776, Infrared, Millimeter-Wave, and Terahertz Technologies X, 127760R (26 November 2023); https://doi.org/10.1117/12.2686640
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KEYWORDS
Astronomy
Superconductors
Cryogenics
Directional couplers
Terahertz radiation
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