Enhancing third-harmonic generation by mirror-induced electric quadrupole resonance in a metal–dielectric nanostructure

Jin Yao; Yan Yin; Longfang Ye; Guoxiong Cai; Qing Huo Liu

doi:10.1364/OL.400593

Author(s)

Jin Yao
Yan Yin
Longfang Ye
Guoxiong Cai
Qing Huo Liu

Detail(s)

Original language	English
Pages (from-to)	5864-5867
Journal / Publication	Optics Letters
Volume	45
Issue number	20
Online published	22 Sept 2020
Publication status	Published - 15 Oct 2020
Externally published	Yes

Link(s)

DOI	DOI https://doi.org/10.1364/OL.400593 Final Published version
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Link to Scopus	https://www.scopus.com/record/display.uri?eid=2-s2.0-85093486040&origin=recordpage
Permanent Link	https://scholars.cityu.edu.hk/en/publications/publication(d1f15e9b-672a-43a4-bdad-e0a56c660036).html

Abstract

Electric quadrupole resonance (EQR), a commonly available high-order Mie-type resonance in all-dielectric nanoparticles, suffers from weak field enhancement and thus inferior third-harmonic generation (THG). In this work, according to the intrinsic centrosymmetry of current distribution, mirror-induced EQR in a silicon disk is effectively generated by introducing a bottom metal film with the perfect electric conductor (PEC) mirror effect, manifesting preeminent capabilities of tailoring far-field scattering and enhancing near-field intensity. The beneficial THG by mirror-induced EQR is enhanced by more than 50-fold as compared to that of the typical EQR without the PEC mirror effect. Furthermore, the influence of the silicon Kerr effect on THG is investigated under increasing pump intensity, achieving maximal efficiency of 2.2 × 10⁻⁴ under pump intensity I₀ = 3 GW/cm². This work opens possibilities of exploring new mirror-induced Mie-type resonances in hybrid nanostructures, finding important applications in frequency conversion, spectroscopy, and sensing at the nanoscale. © 2020 Optical Society of America

Citation Format(s)

[ RIS ] [ BibTeX ]

Enhancing third-harmonic generation by mirror-induced electric quadrupole resonance in a metal–dielectric nanostructure. / Yao, Jin; Yin, Yan; Ye, Longfang et al.
In: Optics Letters, Vol. 45, No. 20, 15.10.2020, p. 5864-5867.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

Yao, J, Yin, Y, Ye, L, Cai, G & Liu, QH 2020, 'Enhancing third-harmonic generation by mirror-induced electric quadrupole resonance in a metal–dielectric nanostructure', Optics Letters, vol. 45, no. 20, pp. 5864-5867. https://doi.org/10.1364/OL.400593

Yao, J., Yin, Y., Ye, L., Cai, G., & Liu, Q. H. (2020). Enhancing third-harmonic generation by mirror-induced electric quadrupole resonance in a metal–dielectric nanostructure. Optics Letters, 45(20), 5864-5867. https://doi.org/10.1364/OL.400593

Yao J, Yin Y, Ye L, Cai G, Liu QH. Enhancing third-harmonic generation by mirror-induced electric quadrupole resonance in a metal–dielectric nanostructure. Optics Letters. 2020 Oct 15;45(20):5864-5867. Epub 2020 Sept 22. doi: 10.1364/OL.400593

Yao, Jin ; Yin, Yan ; Ye, Longfang et al. / Enhancing third-harmonic generation by mirror-induced electric quadrupole resonance in a metal–dielectric nanostructure. In: Optics Letters. 2020 ; Vol. 45, No. 20. pp. 5864-5867.