Imperial College London
Alternate

ProfessorStefanMaier

Faculty of Natural Sciences, Department of Physics

Lee-Lucas Chair in Experimental Physics
 
 
 
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Contact

 

+44 (0)20 7594 6063s.maier Website CV

 
 
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Location

 

Huxley 903Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Kühner:2022:10.1038/s41467-022-32697-z,
author = {Kühner, L and Sortino, L and Berté, R and Wang, J and Ren, H and Maier, SA and Kivshar, Y and Tittl, A},
doi = {10.1038/s41467-022-32697-z},
journal = {Nature Communications},
title = {Radial bound states in the continuum for polarization-invariant nanophotonics},
url = {http://dx.doi.org/10.1038/s41467-022-32697-z},
volume = {13},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - All-dielectric nanophotonics underpinned by the physics of bound states in the continuum (BICs) have demonstrated breakthrough applications in nanoscale light manipulation, frequency conversion and optical sensing. Leading BIC implementations range from isolated nanoantennas with localized electromagnetic fields to symmetry-protected metasurfaces with controllable resonance quality (Q) factors. However, they either require structured light illumination with complex beam-shaping optics or large, fabrication-intense arrays of polarization-sensitive unit cells, hindering tailored nanophotonic applications and on-chip integration. Here, we introduce radial quasi-bound states in the continuum (radial BICs) as a new class of radially distributed electromagnetic modes controlled by structural asymmetry in a ring of dielectric rod pair resonators. The radial BIC platform provides polarization-invariant and tunable high-Q resonances with strongly enhanced near fields in an ultracompact footprint as low as 2 µm2. We demonstrate radial BIC realizations in the visible for sensitive biomolecular detection and enhanced second-harmonic generation from monolayers of transition metal dichalcogenides, opening new perspectives for compact, spectrally selective, and polarization-invariant metadevices for multi-functional light-matter coupling, multiplexed sensing, and high-density on-chip photonics.
AU  - Kühner,L
AU  - Sortino,L
AU  - Berté,R
AU  - Wang,J
AU  - Ren,H
AU  - Maier,SA
AU  - Kivshar,Y
AU  - Tittl,A
DO  - 10.1038/s41467-022-32697-z
PY  - 2022///
SN  - 2041-1723
TI  - Radial bound states in the continuum for polarization-invariant nanophotonics
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/s41467-022-32697-z
UR  - https://www.ncbi.nlm.nih.gov/pubmed/36008419
UR  - http://hdl.handle.net/10044/1/99959
VL  - 13
ER  -
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