Terahertz 3D printed diffractive lens matrices for field-effect transistor detector focal plane arrays

K. Szkudlarek , Maciej Sypek , G. Cywiński , Jarosław Suszek , P Zagrajek , A. Feduniewicz-Zmuda , I. Yahniuk , S. Yatsunenko , A. Nowakowska-Siwińska , D Coquillat , D.B. But , M. Rachoń , K. Wegrzyńska , C. Skierbiszewski , W Knap


We present the concept, the fabrication processes and the experimental results for materials and optics that can be used for terahertz field-effect transistor detector focal plane arrays. More specifically, we propose 3D printed arrays of a new type - diffractive multi-zone lenses of which the performance is superior to that of previously used mono-zone diffractive or refractive elements and evaluate them with GaN/AlGaN field-effect transistor terahertz detectors. Experiments performed in the 300-GHz atmospheric window show that the lens arrays offer both a good efficiency and good uniformity, and may improve the signal-to-noise ratio of the terahertz field-effect transistor detectors by more than one order of magnitude. In practice, we tested 3 x 12 lens linear arrays with printed circuit board THz detector arrays used in postal security scanners and observed significant signal-to-noise improvements. Our results clearly show that the proposed technology provides a way to produce cost-effective, reproducible, flat optics for large-size field-effect transistor THz-detector focal plane arrays. ©2016 Optical Society of America.
Author K. Szkudlarek
K. Szkudlarek,,
, Maciej Sypek ZOiF
Maciej Sypek,,
- Optics and Photonics Division
, G. Cywiński
G. Cywiński,,
, Jarosław Suszek ZOiF
Jarosław Suszek,,
- Optics and Photonics Division
, P Zagrajek
P Zagrajek,,
, A. Feduniewicz-Zmuda
A. Feduniewicz-Zmuda,,
, I. Yahniuk
I. Yahniuk,,
, S. Yatsunenko
S. Yatsunenko,,
, A. Nowakowska-Siwińska
A. Nowakowska-Siwińska,,
, D Coquillat
D Coquillat,,
et al.
Journal seriesOptics Express, ISSN 1094-4087
Issue year2016
Keywords in English3D printers; Cost effectiveness; Focal plane arrays; Focusing; Printed circuit boards; Signal to noise ratio; Transistors, Atmospheric window; Diffractive lens; Fabrication process; Refractive elements; Security scanner; Signal to noise improvements; Terahertz detectors; Terahertz fields, Field effect transistors
URL https://www.scopus.com/inward/record.uri?eid=2-s2.0-84989252447&partnerID=40&md5=514e9fbf029f35182bc095eb1f8a8a01
Languageen angielski
Score (nominal)45
ScoreMinisterial score = 40.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 45.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 3.307 (2) - 2016=3.436 (5)
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