Optical and electrical characterization of a large kinetic inductance bolometer focal plane array
| Autor: | Hannu Sipola, Juha Ala-Laurinaho, Mika Aikio, Visa Vesterinen, Juho Luomahaara, Andrey Timofeev, Leif Grönberg, Kirsi Tappura, Aki Mäyrä, Mikko Metso, Arttu Luukanen, Juha Hassel |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
optical detectors
ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Field of view 02 engineering and technology radiometry 01 natural sciences Kinetic inductance inductance law.invention 010309 optics optical imaging Optics Staring superconducting detectors law 0103 physical sciences 0202 electrical engineering electronic engineering information engineering submillimeter wave circuits THZ Electrical and Electronic Engineering Image resolution spatial resolution detectors Physics Radiation Pixel ta114 ta213 business.industry Bolometer Detector optical resonators 020206 networking & telecommunications security screening THz camera Bolometers Cardinal point THz imaging cryogenics business kinetic inductance |
| Zdroj: | Timofeev, A, Luomahaara, J, Grönberg, L, Mäyrä, A, Sipola, H, Aikio, M, Metso, M, Vesterinen, V, Tappura, K, Ala-Laurinaho, J, Luukanen, A & Hassel, J 2017, ' Optical and electrical characterization of a large kinetic inductance bolometer focal plane array ', IEEE Transactions on Terahertz Science and Technology, vol. 7, no. 2, 7811297, pp. 218-224 . https://doi.org/10.1109/TTHZ.2016.2639470 |
| Popis: | Sub-THz imaging techniques are currently emerging with applications especially in security screening requiring higher throughput in mass transit and public areas. In the context of person imagers, the field of view and the spatial resolution set the requirement for the number of image pixels. We perform an experimental feasibility study on a fully staring radiometric camera with one detector per image pixel. The aim is to avoid the shortcomings characteristic of optomechanical scanners with a limited number of detectors. Our approach is based on superconducting kinetic inductance bolometer arrays. We demonstrate successful fabrication and operation of a focal plane array with 2500 nanomembrane-integrated bolometers, and a compatible optical system enabling standoff imaging at the distance of 5 m. We characterize the system in terms of radiometric contrast and spatial resolution. |
| Databáze: | OpenAIRE |
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