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Infrared plasmonic filters integrated with an optical and terahertz multi‐spectral material (Phys. Status Solidi A 8∕2015)
Author(s) -
McCrindle Iain James Hugh,
Grant James Paul,
Gouveia Luiz Carlos Paiva,
Cumming David Robert Sime
Publication year - 2015
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201570452
Subject(s) - terahertz radiation , plasmon , multispectral image , metamaterial , optoelectronics , optics , materials science , nanophotonics , infrared , optical filter , wavelength , terahertz gap , photonics , filter (signal processing) , terahertz metamaterials , physics , computer science , far infrared laser , laser , computer vision
Advances in micro and nanophotonic technologies allow us to imagine building a Supercamera that is capable of imaging in all regions of the light spectrum using a single integrated image sensor. An essential part of such a device will be multi‐spectral materials to make filter technologies to discriminate and spatially multiplex many sensors on a focal plane array. Structured photonic materials, such as plasmonic filters and metamaterial absorbers, exhibit engineered optical characteristics that are dependent on the properties of periodically arrayed subwavelength unit cells. In the article on pp. 1625–1633 , McCrindle et al. present the design, simulation, fabrication and characterisation of an infrared plasmonic filter set for multi‐spectral imaging applications. The authors have also demonstrated that it is possible to combine infrared plasmonic filter hole arrays with optical plasmonic filters and a terahertz metamaterial absorber to create a new hybrid synthetic multispectral material. The resultant synthetic multi‐spectral material is capable of filtering three optical wavelengths, a single nearinfrared wavelength, a single short‐wave infrared wavelength, and two mid‐infrared wavelengths, whilst simultaneously absorbing a single terahertz frequency.