Development of an absolute frequency calibration system for a superconducting integrated spectrometer

Kenichi Karatsu; Zhongyue Zhang; Alejandro Pascual Laguna; Shahab O. Dabironezare; Akira Endo; David J. Thoen; Vignesh Murugesan; Jochem J. A. Baselmans

doi:10.1117/12.2561473

13 December 2020 Development of an absolute frequency calibration system for a superconducting integrated spectrometer

Kenichi Karatsu, Zhongyue Zhang, Alejandro Pascual Laguna, Shahab O. Dabironezare, Akira Endo, David J. Thoen, Vignesh Murugesan, Jochem J. A. Baselmans

Author Affiliations +

Proceedings Volume 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X; 114533H (2020) https://doi.org/10.1117/12.2561473
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

DESHIMA 2.0 will be a wideband submillimeter (submm) spectrometer based on integrated NbTiN superconducting resonant filters and Microwave Kinetic Inductance Detectors. DESHIMA 2.0 covers an instantaneous frequency band from 220 to 440 GHz with a frequency resolution of F/dF = 500 to carry out spectroscopic redshift measurements of submm-bright galaxies (SMGs). For the absolute frequency calibration of DESHIMA 2.0, we have developed a gas-cell calibration system that can be used with methanol vapor or N2O gas. The system is designed not only for the frequency calibration, but also for long integration time tests that simulate observations of faint extra-galactic lines.

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Kenichi Karatsu, Zhongyue Zhang, Alejandro Pascual Laguna, Shahab O. Dabironezare, Akira Endo, David J. Thoen, Vignesh Murugesan, and Jochem J. A. Baselmans "Development of an absolute frequency calibration system for a superconducting integrated spectrometer", Proc. SPIE 11453, Millimeter, Submillimeter, and Far-Infrared Detectors and Instrumentation for Astronomy X, 114533H (13 December 2020); https://doi.org/10.1117/12.2561473

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