Research output per year
Research output per year
Juho Luomahaara, Hannu Sipola, Leif Grönberg, Aki Mäyrä, Mika Aikio, Andrey Timofeev, Kirsi Tappura, Anssi Rautiainen, Aleksi Tamminen, Visa Vesterinen, Mikko Leivo, Feng Gao, Hannu Vasama, Arttu Luukanen, Juha Hassel
Research output: Contribution to journal › Article › Scientific › peer-review
Current state-of-the-art security video cameras operating in the THz regime employ up to a few hundred detectors together with optomechanical scanning to cover an adequate field-of-view for practical concealed object detection. As a downside, the scanning reduces the integration time per pixel compromising sensitivity, increases the complexity, and reduces the reliability of the system. In contrast to this, we demonstrate a video camera, for the first time, basing its operation on the concept of a fully staring 2-D detector array with a single detector element responsible for a single imaged pixel. The imaging system is built around the detector technology of kinetic inductance bolometers, allowing the operation in the intermediate temperature range >5 K and the scale-up of the detector count into multikilo-pixel arrays and beyond. The system is designed for a field-of-view of 2 × 1 m 2 and an imaging distance of 2.5 m. We describe the main components of the system and show images from concealed object experiments performed at a near-video rate of 9 Hz.
Original language | English |
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Article number | 9229175 |
Pages (from-to) | 101-108 |
Journal | IEEE Transactions on Terahertz Science and Technology |
Volume | 11 |
Issue number | 1 |
DOIs | |
Publication status | Published - Jan 2021 |
MoE publication type | A1 Journal article-refereed |
Research output: Thesis › Master's thesis