title: Experimental Demonstration of Adaptive Infrared Multispectral Imaging using Plasmonic Filter Array.
abstract: In our previous theoretical study, we performed target detection using a plasmonic sensor array incorporating the data-processing technique termed "algorithmic spectrometry". We achieved the reconstruction of a target spectrum by extracting intensity at multiple wavelengths with high resolution from the image data obtained from the plasmonic array. The ultimate goal is to develop a full-scale focal plane array with a plasmonic opto-coupler in order to move towards the next generation of versatile infrared cameras. To this end, and as an intermediate step, this paper reports the experimental demonstration of adaptive multispectral imagery using fabricated plasmonic spectral filter arrays and proposed target detection scenarios. Each plasmonic filter was designed using periodic circular holes perforated through a gold layer, and an enhanced target detection strategy was proposed to refine the original spectrometry concept for spatial and spectral computation of the data measured from the plasmonic array. Both the spectrum of blackbody radiation and a metal ring object at multiple wavelengths were successfully reconstructed using the weighted superposition of plasmonic output images as specified in the proposed detection strategy. In addition, plasmonic filter arrays were theoretically tested on a target at extremely high temperature as a challenging scenario for the detection scheme.
authors.affiliation: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, 45433, USA.|Sensor APEX, University of Dayton Research Institute, Dayton, 45469, USA.
authors.forename: Woo-Yong
authors.initials: WY
authors.lastname: Jang
authors.affiliation: Air Force Research Laboratory, Materials Directorate, Wright-Patterson AFB, 45433, USA.
authors.forename: Zahyun
authors.initials: Z
authors.lastname: Ku
authors.affiliation: Korea Research Institute of Standards and Science, Division of Convergence Technology, Daejeon, 305-340, Korea.
authors.forename: Jiyeon
authors.initials: J
authors.lastname: Jeon
authors.affiliation: Korea Research Institute of Standards and Science, Division of Convergence Technology, Daejeon, 305-340, Korea.
authors.forename: Jun Oh
authors.initials: JO
authors.lastname: Kim
authors.affiliation: Korea Research Institute of Standards and Science, Division of Convergence Technology, Daejeon, 305-340, Korea.
authors.forename: Sang Jun
authors.initials: SJ
authors.lastname: Lee
authors.affiliation: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, 45433, USA.
authors.forename: James
authors.initials: J
authors.lastname: Park
authors.affiliation: Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, 45433, USA.
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Noyola
authors.affiliation: Air Force Research Laboratory, Materials Directorate, Wright-Patterson AFB, 45433, USA.
authors.forename: Augustine
authors.initials: A
authors.lastname: Urbas