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All-dielectric metasurface imaging platform applicable to laser scanning microscopy with enhanced axial resolution and wavelength selection

Title
All-dielectric metasurface imaging platform applicable to laser scanning microscopy with enhanced axial resolution and wavelength selection
Authors
LEE, DASOLKIM, MINKYUNGKIM, JEONGHYUNHONG, HYEONJUNBADLOE, TREVONKIM, DONG SUNGRHO, JUNSUK
Date Issued
Aug-2019
Publisher
OPTICAL SOC AMER
Abstract
Metasurfaces composed of artificially fabricated nano-sized structures have shown extraordinary potential for the precise control of light. Here, we demonstrate for the first time, a metasurface application to reduce the axial size of the point spread function in laser scanning microscopy. The all-dielectric metasurface has wavelength selectivity over the whole visible range, and confinement of the excitation point spread function of the electromagnetic field. These two unique features allow the metasurface to be applied to laser scanning microscope systems. Numerical and experimental demonstrations of the proposed all-dielectric metasurface are reported, showing sharp implicit spectral filtering in the visible range and enhanced axial confinement by observing actin filaments in NIH3T3 cells. We believe that our approach can provide a useful insight on the practicality of using metasurfaces as an imaging platform. (C) 2019 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
URI
http://oasis.postech.ac.kr/handle/2014.oak/99617
ISSN
2159-3930
Article Type
Article
Citation
OPTICAL MATERIALS EXPRESS, vol. 9, no. 8, page. 3248 - 3259, 2019-08
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 RHO, JUNSUK
Dept of Mechanical Enginrg
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