Experimental demonstration of infrared spectral reconstruction using plasmonic metasurfaces

B Craig; VR Shrestha; J Meng; JJ Cadusch; KB Crozier

Journal article

Experimental demonstration of infrared spectral reconstruction using plasmonic metasurfaces

B Craig, VR Shrestha, J Meng, JJ Cadusch, KB Crozier

Optics Letters | OPTICAL SOC AMER | Published : 2018

DOI: 10.1364/OL.43.004481

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Abstract

We computationally reconstruct short- to long-wave infrared spectra using an array of plasmonic metasurface filters. We illuminate the filter array with an unknown spectrum and measure the optical power transmitted through each filter with an infrared microscope to emulate a filter-detector array system. We then use the recursive least squares method to determine the unknown spectrum. We demonstrate our method with light from a blackbody. We also demonstrate it with spectra generated by passing the light from the blackbody through various materials. Our approach is a step towards miniaturized spectrometers spanning the short- to long-wave infrared based on filter-detector arrays.

University of Melbourne Researchers

Jiajun Meng Author

Kenneth Crozier Author

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Grants

Awarded by Defense Advanced Research Projects Agency

Funding Acknowledgements

Australian Research Council (ARC) (DP150103736, DP180104141, FT140100577); Defense Advanced Research Projects Agency (DARPA) (HR0011-16-1-0004); VESKI.