Gap surface plasmon
A Gap surface plasmon (GSP) can arise when electromagnetic radiation of the right wavelength meets a solid metasurface built up from a subwavelength thin dielectric spacer sandwiched between an optically thick metal film and arrays of metal sub-wavelength elements arranged in a strictly or quasi-periodic fashion.[1] [2]
Metasurfaces are two-dimensionally arranged metamaterials with uniquely engineered properties in the spectral and spatial manipulation of electromagnetic waves. They are ultra-thin planar structures and offer extraordinary phase shift, amplitude modulation or polarization transition by patterning nanoscale dense antenna arrays or slits. [3] [4]
A plasmon is a quasiparticle which arises from the quantization of plasma oscillations and these are confined in the geometry of the material in the carefully engineered gaps.
References
- ^ Ding, Fei; Chen, Yiting; Bozhevolnyi, Sergey I. (2020-05-01). "Gap-surface plasmon metasurfaces for linear-polarization conversion, focusing, and beam splitting". Photonics Research. 8 (5): 707–714. doi:10.1364/PRJ.386655. ISSN 2327-9125.
- ^ Fei Ding*, Yuanqing Yang, Rucha A. Deshpande and Sergey I. BozhevolnyiA review of gap-surface plasmon metasurfaces: fundamentals and applications , Nanophotonics 2018; https://www.researchgate.net/publication/325182879_A_review_of_gap-surface_plasmon_metasurfaces_Fundamentals_and_applications
- ^ Guo, Jingjing; Tu, Yan; Yang, Lanlan; Zhang, Ruiwen; Wang, Lili; Wang, Baoping (2017-10-26). "Electrically Tunable Gap Surface Plasmon-based Metasurface for Visible Light". Scientific Reports. 7 (1): 14078. doi:10.1038/s41598-017-14583-7. ISSN 2045-2322.
- ^ Pors, Anders (2016-04-01). "Gap plasmon-based metasurfaces: fundamentals and applications (Conference Presentation)". 9883: 98830R. doi:10.1117/12.2228014.
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