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

Other (2020)

Authors

Shahab Oddin Dabironezare Tera-Hertz Sensing -

K. Karatsu Tera-Hertz Sensing -

S.J.C. Yates SRON Netherlands Institute for Space Research

A. Pascual Laguna Tera-Hertz Sensing -

V. Murugesan SRON Netherlands Institute for Space Research

David Thoen Tera-Hertz Sensing -

A. Endo Tera-Hertz Sensing -

J.J.A. Baselmans Tera-Hertz Sensing -

Nuria Llombart Tera-Hertz Sensing -

Research Group

Tera-Hertz Sensing () (TU Delft)

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

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Published Date

2020

Language

English

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Microelectronics

Research Group

Tera-Hertz Sensing

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.