A fully-staring THz video camera with wide field-of-view and close-looking optics

Juho Luomahaara*, Aki Mäyrä, Mika Aikio, Hannu Sipola, Leif Grönberg, Andrey Timofeev, Kirsi Tappura, Anssi Rautiainen, Juha Ala-Laurinaho, Aleksi Tamminen, Visa Vesterinen, Mikko Leivo, Feng Gao, Hannu Vasama, Arttu Luukanen, Juha Hassel

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

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Abstract

We present a passive, fully-staring THz imaging system for security screening purposes. The camera is equipped with a multi-kilo-pixel detector array of kinetic inductance bolometers, cryogenics operating above 5 K, and a multiplexed low-noise electronics to readout the whole detector array. After briefly describing the system, we concentrate on the optical system of the instrument. We discuss the trade-offs related to the optics and justify the adopted lens material and design. Furthermore, we show measurement results characterizing the related optical performance.

Original languageEnglish
Title of host publicationMillimetre Wave and Terahertz Sensors and Technology XIII
EditorsNeil A. Salmon, Frank Gumbmann
ISBN (Electronic)9781510638952
DOIs
Publication statusPublished - 1 Jan 2020
MoE publication typeA4 Article in a conference publication
EventMillimetre Wave and Terahertz Sensors and Technology - Virtual, Online, United Kingdom
Duration: 21 Sep 202025 Sep 2020
Conference number: 13

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11541
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceMillimetre Wave and Terahertz Sensors and Technology
Country/TerritoryUnited Kingdom
CityVirtual, Online
Period21/09/202025/09/2020

Keywords

  • Double-Gauss lens
  • Optics
  • THz imaging system

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