@inproceedings{64e490532a2645de8a4225841983e6c8,
title = "Nonlinear imaging through magnetic dipole quasi-BIC ultra-thin resonators",
abstract = "We propose an ultra-thin silicon metasurface supporting a high-quality leaky mode which is formed by partially breaking a bound-state-in-the-continuum (BIC) generated by the collective magnetic dipole (MD) resonance excited in the subdiffractive periodic systems. Such a quasi-BIC MD state leads to a robust near-field enhancement and a significant boost of the nonlinear process, resulting in measured 500-fold enhancement of third-harmonic emission in comparison to the conventional silicon disk metasurface. We further experimentally demonstrate the highly-efficient nonlinear image tuning via polarisation and wavelength control, opening the way for various applications in high-performance nonlinear metadevices including tunable laser, tunable displays, nonlinear imaging.",
keywords = "Bound state in the continuum, Dielectric nanoresonators, Mie resonance",
author = "Lei Xu and \{Zangeneh Kamali\}, Khosro and Lujun Huang and Mohsen Rahmani and Alexander Smirnov and Rocio Camacho-Morales and Yixuan Ma and Guoquan Zhang and Matt Woolley and Neshev, \{Dragomir N.\} and Miroshnichenko, \{Andrey E.\}",
note = "Publisher Copyright: {\textcopyright} 2019 SPIE.; SPIE Micro + Nano Materials, Devices, and Applications 2019 ; Conference date: 09-12-2019 Through 12-12-2019",
year = "2019",
doi = "10.1117/12.2541094",
language = "English",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Simpson, \{M. Cather\} and Saulius Juodkazis",
booktitle = "SPIE Micro + Nano Materials, Devices, and Applications 2019",
address = "United States",
}