Dual quasi-bound state enhanced second harmonic generation in lithium niobate metasurfaces

Enhancing the light-matter interaction with high-Q bound states in the continuum has aroused great interest. In our paper, we present an all-dielectric metasurfaces in the realm of nonlinear optics, by harnessing the power of dual quasi-bound states in the continuum and surface lattice resonance to...

Full description

Saved in:
Bibliographic Details
Published in:Optical and quantum electronics 2024-11, Vol.56 (12)
Main Authors: Ye, Zhehao, Fan, Yuancheng, Sun, Kangyao, Qiu, Weixi, Wang, Haizhou, Shi, Hongkui, Zeng, Yali, Zhang, Fuli
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Computer Communication Networks
Electrical Engineering
Lasers
Lattice vibration
Lithium niobates
Metasurfaces
Multipoles
Near infrared radiation
Nonlinear optics
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Resonance scattering
Second harmonic generation
Thickness
Ultraviolet spectra
Visible spectrum
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Enhancing the light-matter interaction with high-Q bound states in the continuum has aroused great interest. In our paper, we present an all-dielectric metasurfaces in the realm of nonlinear optics, by harnessing the power of dual quasi-bound states in the continuum and surface lattice resonance to enhance second-harmonic generation on lithium niobate metasurfaces. It is demonstrated that the strong enhancement in conversion efficiency is up to 10,000 times of a lithium niobate film with equivalent thickness and approximately 100 times greater than that observed for bound states in the continuum within a wide spectral range in near-infrared band. The dynamic process of the modes was demonstrated by the multipole scattering theory. This breakthrough offers straightforward design principles for harmonic generation utilizing metasurfaces, which is highly advantageous for a range of applications, including efficient nonlinear optics, sensitive biosensing, and the generation of laser sources across the ultraviolet-visible spectrum.
ISSN:0306-8919
1572-817X
DOI:10.1007/s11082-024-07902-6