Broadband Quasi-Optical System for On-chip Filter-bank Spectrometer Operating at Sub-mm Wavelengths [VIDEO]

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Broadband Quasi-Optical System for On-chip Filter-bank Spectrometer Operating at Sub-mm Wavelengths [VIDEO]

Other (2020)

Author(s)

S.O. Dabironezare (TU Delft - Tera-Hertz Sensing)

K. Karatsu (TU Delft - Tera-Hertz Sensing)

S.J.C. Yates (SRON–Netherlands Institute for Space Research)

A. Pascual Laguna (TU Delft - Tera-Hertz Sensing)

V. Murugesan (SRON–Netherlands Institute for Space Research)

D.J. Thoen (TU Delft - Tera-Hertz Sensing)

A. Endo (TU Delft - Tera-Hertz Sensing)

J.J.A. Baselmans (TU Delft - Tera-Hertz Sensing)

N. Llombart (TU Delft - Tera-Hertz Sensing)

DOI related publication

https://doi.org/10.1117/12.2562383 Final published version

To reference this document use

https://resolver.tudelft.nl/uuid:941e7ccf-31ac-471a-bd12-3f40d3682d55

More Info

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Publication Year

2020

Language

English

Abstract

DESHIMA 2.0 is a sub-millimetre wave spectrometer based on a single superconducting chip with a large instantaneous bandwidth. The instrument consists of a Quasi-optical (QO) system and an on-chip filter-bank coupled to an array of Kinetic Inductance Detectors (KID). In this work, this broad band QO system, operating at sub-millimetre wavelengths (220 GHz to 720 GHz), will be presented. This design is achieved using a field matching technique and consists of a hyper-hemispherical leaky lens antenna coupled to a series of Dragonian reflectors. The optimized design has an average illumination efficiency over the band of ~70%. This performance is also measured directly through the response of the KIDs.