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Anssi Rautiainen
Researcher at VTT Technical Research Centre of Finland
Publications - 32
Citations - 397
Anssi Rautiainen is an academic researcher from VTT Technical Research Centre of Finland. The author has contributed to research in topics: Frame rate & Terahertz radiation. The author has an hindex of 10, co-authored 32 publications receiving 358 citations.
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Journal ArticleDOI
Passive terahertz camera for standoff security screening
Erich N. Grossman,Charles Dietlein,Juha Ala-Laurinaho,Mikko Leivo,Leif Grönberg,Markus Gronholm,Petteri Lappalainen,Anssi Rautiainen,Aleksi Tamminen,A. Luukanen +9 more
TL;DR: The construction and performance of a passive, real-time terahertz camera based on a modular, 64-element linear array of cryogenic hotspot microbolometers, which detects signals on free-standing bridges of superconducting Nb or NbN at the feeds of broadband planar spiral antennas is described.
Proceedings ArticleDOI
Stand-off passive THz imaging at 8-meter stand-off distance: results from a 64-channel real-time imager
Arttu Luukanen,Panu Helistö,Petteri Lappalainen,Mikko Leivo,Anssi Rautiainen,Hans Toivanen,Heikki Seppä,Zach Taylor,Charles Dietlein,Erich N. Grossman +9 more
TL;DR: Progress is reported on a video-rate THz camera demonstrator which utilizes broadband antenna-coupled microbolometers as detectors, operated within a turnkey commercial closed-cycle cryocooler.
Proceedings ArticleDOI
Real-time passive terahertz imaging system for standoff concealed weapons imaging
Arttu Luukanen,Leif Grönberg,Markus Gronholm,Petteri Lappalainen,Mikko Leivo,Anssi Rautiainen,Aleksi Tamminen,Juha Ala-Laurinaho,Charles Dietlein,Erich N. Grossman +9 more
TL;DR: A passive terAhertz imaging system which acquires passive terahertz imagery near video frame rate and based on a 64 pixel linear array of superconducting antenna-coupled microbolometers operated within a commercial cryogen-free closed cycle cryocooler.
Proceedings ArticleDOI
Passive three-colour submillimetre-wave video camera
TL;DR: In this article, a three-band passive imaging system operating at effective center-frequencies of 250 GHz, 450 GHz and 720 GHz is presented, which is used for concealed-weapons detection.
Proceedings ArticleDOI
A passive, real-time, terahertz camera for security screening, using superconducting microbolometers
TL;DR: In this paper, the authors describe a broadband terahertz camera based on a modular 64-element linear array of hot-spot microbolometers, which is performed by entirely uncooled electronics; no SQUIDs or cryogenic HEMTs are employed.