Ultraviolet second harmonic generation from Mie-resonant lithium niobate nanospheres-Reference-Cited by-同舟云学术

Ultraviolet second harmonic generation from Mie-resonant lithium niobate nanospheres

Published:2021-09-08 Issue:17 Volume:10 Page:4273-4278
ISSN:2192-8614
Container-title:Nanophotonics
language:en
Short-container-title:

Author:

Wang Jiayi¹,Liu Zhuojun¹^ORCID,Xiang Jin²^ORCID,Chen Bo¹,Wei Yuming¹,Liu Wenjing³,Xu Yi⁴,Lan Sheng⁵,Liu Jin¹

Affiliation:

1. State Key Laboratory of Optoelectronic Materials and Technologies, School of Physics , Sun Yat-sen University , Guangzhou 510275 , China

2. Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, School of Optoelectronic Engineering , Chongqing University , Chongqing 400044 , China

3. State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics , Peking University , 100871 , Beijing , China

4. Department of Electronic Engineering, College of Information Science and Technology , Jinan University , Guangzhou 510630 , China

5. Guangdong Provincial Key Laboratory of Nanophotonic Functional Materials and Devices, School of Information and Optoelectronic Science and Engineering , South China Normal University , Guangzhou 510006 , China

Abstract

Abstract Lithium niobate (LN), as a nonlinear material with a large nonlinear susceptibility, has been widely employed in second harmonic generation (SHG) up to ultraviolet (UV) frequency range due to its broad low-absorption window. In nanophotonics, it is possible to harness the Mie resonances associated with the single dielectric particles to boost the nonlinear light–matter interactions. Here, we fabricate single Mie-resonant LN nanospheres on a SiO2 substrate via the femtosecond (fs) laser ablation technique. By exploiting the magnetic dipole (MD) Mie resonance, UV SHG from the LN nanosphere is significantly enhanced with a measured conversion efficiency of 4.45 × 10−8 under the excitation of an fs laser at 750 nm. The single LN nanospheres achieved in this work could serve as Mie resonators for building nonlinear nanophotonic devices such as frequency converters and quantum light sources, etc.

Publisher

Walter de Gruyter GmbH

Subject

Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biotechnology

Link

https://www.degruyter.com/document/doi/10.1515/nanoph-2021-0326/pdf

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