All-dielectric metasurface lenses for focal plane arrays operating in mid-wave infrared spectrum

Nazmi Yilmaz; Aytekin Ozdemir; Fehim T. Bagci; Yuzuru Takashima; Hamza Kurt

doi:10.1117/12.2320986

19 September 2018 All-dielectric metasurface lenses for focal plane arrays operating in mid-wave infrared spectrum

Nazmi Yilmaz, Aytekin Ozdemir, Fehim T. Bagci, Yuzuru Takashima, Hamza Kurt

Proceedings Volume 10719, Metamaterials, Metadevices, and Metasystems 2018; 1071915 (2018) https://doi.org/10.1117/12.2320986
Event: SPIE Nanoscience + Engineering, 2018, San Diego, California, United States

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.

Citation Download Citation

Nazmi Yilmaz, Aytekin Ozdemir, Fehim T. Bagci, Yuzuru Takashima, and Hamza Kurt "All-dielectric metasurface lenses for focal plane arrays operating in mid-wave infrared spectrum", Proc. SPIE 10719, Metamaterials, Metadevices, and Metasystems 2018, 1071915 (19 September 2018); https://doi.org/10.1117/12.2320986

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