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Title: All-dielectric metasurface lenses for focal plane arrays operating in mid-wave infrared spectrum
Authors: Yılmaz, Nazmi
Özdemir, Aytekin
Bağcı, Fehim Taha
Takashima, Yuzuru
Kurt, Hamza
Keywords: All dielectric
focal plane array
Issue Date: Aug-2018
Publisher: SPIE
Source: Yilmaz, N., Ozdemir, A., Bagci, F. T., Takashima, Y., and Kurt, H. (2018, September). All-dielectric metasurface lenses for focal plane arrays operating in mid-wave infrared spectrum. In Metamaterials, Metadevices, and Metasystems 2018 (Vol. 10719, p. 1071915). International Society for Optics and Photonics.
Abstract: Focal plane arrays (FPAs) as a two-dimensional detector pixel matrix positioned in the focal plane of an optical system have been developed continuously for obtaining higher resolution. On the other hand, for developing highresolution, compact-size FPAs, used methods such as the miniaturization of pixel size leads to serious problems such as increased optical crosstalk. In this study, we proposed highly efficient all-dielectric metasurface lens arraybased FPA at mid-wave infrared spectrum. All-dielectric metasurface lens arrays were numerically demonstrated to achieve high optical efficiency above 85%. Moreover, our design compared with conventional and earlier metasurface-based studies has exhibited much superior optical crosstalk performance. While standing the high efficiency, optical crosstalk is decreased to low level of ? 2.8%. A figure-of-merit (FoM) is also defined for the device performance, which is designated as the focusing efficiency per optical crosstalk times the f-number. The results show that a FOM of approximately 90 is achieved. These proposed all-dielectric metasurface lens arrays demonstrate great potential for increasing the signal to noise ratio and sensitivity thus paving the way for compactsize and high-resolution FPAs to be deployed in various applications including thermal cameras, imaging devices and bolometers. © 2018 SPIE.
ISBN: 978-151062009-4
ISSN: 0277786X
Appears in Collections:Elektrik ve Elektronik Mühendisliği Bölümü / Department of Electrical & Electronics Engineering
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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