Applications of superconducting bolometers in security imaging

Arttu Luukanen, Mikko Leivo, Anssi Rautiainen, Markus Grönholm, Hans Toivanen, Leif Grönberg, Panu Helistö, Aki Mäyrä, Mika Aikio, E.N. Grossman

Research output: Contribution to journalArticleScientificpeer-review

Abstract

Millimeter-wave (MMW) imaging systems are currently undergoing deployment World-wide for airport security screening applications. Security screening through MMW imaging is facilitated by the relatively good transmission of these wavelengths through common clothing materials. Given the long wavelength of operation (frequencies between 20 GHz to ~ 100 GHz, corresponding to wavelengths between 1.5 cm and 3 mm), existing systems are suited for close-range imaging only due to substantial diffraction effects associated with practical aperture diameters. The present and arising security challenges call for systems that are capable of imaging concealed threat items at stand-off ranges beyond 5 meters at near video frame rates, requiring substantial increase in operating frequency in order to achieve useful spatial resolution. The construction of such imaging systems operating at several hundred GHz has been hindered by the lack of submm-wave low-noise amplifiers. In this paper we summarize our efforts in developing a submm-wave video camera which utilizes cryogenic antenna-coupled microbolometers as detectors. Whilst superconducting detectors impose the use of a cryogenic system, we argue that the resulting back-end complexity increase is a favorable trade-off compared to complex and expensive room temperature submm-wave LNAs both in performance and system cost.
Original languageEnglish
Article number052018
JournalJournal of Physics: Conference Series
Volume400
Issue numberPart 5
DOIs
Publication statusPublished - 2012
MoE publication typeA1 Journal article-refereed
Event26th International Conference on Low Temperature Physics, LT 2011 - Beijing, China
Duration: 10 Aug 201217 Aug 2012
Conference number: 26

Fingerprint

bolometers
millimeter waves
cryogenics
airport security
screening
wavelengths
clothing
detectors
low noise
antennas
amplifiers
spatial resolution
apertures
cameras
costs
room temperature
diffraction

Cite this

Luukanen, Arttu ; Leivo, Mikko ; Rautiainen, Anssi ; Grönholm, Markus ; Toivanen, Hans ; Grönberg, Leif ; Helistö, Panu ; Mäyrä, Aki ; Aikio, Mika ; Grossman, E.N. / Applications of superconducting bolometers in security imaging. In: Journal of Physics: Conference Series. 2012 ; Vol. 400, No. Part 5.
@article{a1e3874f56464a0dbcfd5f3e0a02ef24,
title = "Applications of superconducting bolometers in security imaging",
abstract = "Millimeter-wave (MMW) imaging systems are currently undergoing deployment World-wide for airport security screening applications. Security screening through MMW imaging is facilitated by the relatively good transmission of these wavelengths through common clothing materials. Given the long wavelength of operation (frequencies between 20 GHz to ~ 100 GHz, corresponding to wavelengths between 1.5 cm and 3 mm), existing systems are suited for close-range imaging only due to substantial diffraction effects associated with practical aperture diameters. The present and arising security challenges call for systems that are capable of imaging concealed threat items at stand-off ranges beyond 5 meters at near video frame rates, requiring substantial increase in operating frequency in order to achieve useful spatial resolution. The construction of such imaging systems operating at several hundred GHz has been hindered by the lack of submm-wave low-noise amplifiers. In this paper we summarize our efforts in developing a submm-wave video camera which utilizes cryogenic antenna-coupled microbolometers as detectors. Whilst superconducting detectors impose the use of a cryogenic system, we argue that the resulting back-end complexity increase is a favorable trade-off compared to complex and expensive room temperature submm-wave LNAs both in performance and system cost.",
author = "Arttu Luukanen and Mikko Leivo and Anssi Rautiainen and Markus Gr{\"o}nholm and Hans Toivanen and Leif Gr{\"o}nberg and Panu Helist{\"o} and Aki M{\"a}yr{\"a} and Mika Aikio and E.N. Grossman",
year = "2012",
doi = "10.1088/1742-6596/400/5/052018",
language = "English",
volume = "400",
journal = "Journal of Physics: Conference Series",
issn = "1742-6588",
publisher = "Institute of Physics IOP",
number = "Part 5",

}

Applications of superconducting bolometers in security imaging. / Luukanen, Arttu; Leivo, Mikko; Rautiainen, Anssi; Grönholm, Markus; Toivanen, Hans; Grönberg, Leif; Helistö, Panu; Mäyrä, Aki; Aikio, Mika; Grossman, E.N.

In: Journal of Physics: Conference Series, Vol. 400, No. Part 5, 052018, 2012.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Applications of superconducting bolometers in security imaging

AU - Luukanen, Arttu

AU - Leivo, Mikko

AU - Rautiainen, Anssi

AU - Grönholm, Markus

AU - Toivanen, Hans

AU - Grönberg, Leif

AU - Helistö, Panu

AU - Mäyrä, Aki

AU - Aikio, Mika

AU - Grossman, E.N.

PY - 2012

Y1 - 2012

N2 - Millimeter-wave (MMW) imaging systems are currently undergoing deployment World-wide for airport security screening applications. Security screening through MMW imaging is facilitated by the relatively good transmission of these wavelengths through common clothing materials. Given the long wavelength of operation (frequencies between 20 GHz to ~ 100 GHz, corresponding to wavelengths between 1.5 cm and 3 mm), existing systems are suited for close-range imaging only due to substantial diffraction effects associated with practical aperture diameters. The present and arising security challenges call for systems that are capable of imaging concealed threat items at stand-off ranges beyond 5 meters at near video frame rates, requiring substantial increase in operating frequency in order to achieve useful spatial resolution. The construction of such imaging systems operating at several hundred GHz has been hindered by the lack of submm-wave low-noise amplifiers. In this paper we summarize our efforts in developing a submm-wave video camera which utilizes cryogenic antenna-coupled microbolometers as detectors. Whilst superconducting detectors impose the use of a cryogenic system, we argue that the resulting back-end complexity increase is a favorable trade-off compared to complex and expensive room temperature submm-wave LNAs both in performance and system cost.

AB - Millimeter-wave (MMW) imaging systems are currently undergoing deployment World-wide for airport security screening applications. Security screening through MMW imaging is facilitated by the relatively good transmission of these wavelengths through common clothing materials. Given the long wavelength of operation (frequencies between 20 GHz to ~ 100 GHz, corresponding to wavelengths between 1.5 cm and 3 mm), existing systems are suited for close-range imaging only due to substantial diffraction effects associated with practical aperture diameters. The present and arising security challenges call for systems that are capable of imaging concealed threat items at stand-off ranges beyond 5 meters at near video frame rates, requiring substantial increase in operating frequency in order to achieve useful spatial resolution. The construction of such imaging systems operating at several hundred GHz has been hindered by the lack of submm-wave low-noise amplifiers. In this paper we summarize our efforts in developing a submm-wave video camera which utilizes cryogenic antenna-coupled microbolometers as detectors. Whilst superconducting detectors impose the use of a cryogenic system, we argue that the resulting back-end complexity increase is a favorable trade-off compared to complex and expensive room temperature submm-wave LNAs both in performance and system cost.

U2 - 10.1088/1742-6596/400/5/052018

DO - 10.1088/1742-6596/400/5/052018

M3 - Article

VL - 400

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - Part 5

M1 - 052018

ER -