Guo Haomin, Hu Qi, Zhang Chengyun, Fan Zihao, Liu Haiwen, Wu Runmin, Liu Zhiyu, Pan Shusheng
School of Physics and Materials Science, Guangzhou University, Guangzhou 510006, China.
Research Center for Advanced Information Materials (CAIM), Huangpu Research and Graduate School of Guangzhou University, Guangzhou 510555, China.
Nanomaterials (Basel). 2023 Jan 23;13(3):462. doi: 10.3390/nano13030462.
Realizing strong laser-matter interaction in a heterostructure consisting of two-dimensional transition metal dichalcogenides (TMDCs) and an optical nanocavity is a potential strategy for novel photonic devices. In this paper, two core-Ω shell nanostructures, Si@WS core-Ω shell nanostructure on glass/Si substrates, are briefly introduced. A strong laser-matter interaction occurred in the Si@WS core-Ω shell nanostructure when it was excited by femtosecond (fs) laser in the near-infrared-1 region (NIR-1, 650 nm-950 nm), resulting in a resonance coupling between the electric dipole resonance (EDR) of the Si nanosphere (NS) and the exciton resonance of the WS nanomembrane (NMB). The generation of resonance coupling regulates the resonant mode of the nanostructure to realize the multi-dimensional nonlinear optical response, which can be utilized in the fields of biological imaging and nanoscale light source.
在由二维过渡金属二硫属化物（TMDCs）和光学纳米腔组成的异质结构中实现强激光与物质的相互作用是新型光子器件的一种潜在策略。本文简要介绍了两种核-Ω壳纳米结构，即玻璃/Si衬底上的Si@WS核-Ω壳纳米结构。当Si@WS核-Ω壳纳米结构在近红外-1区域（NIR-1，650 nm - 950 nm）被飞秒（fs）激光激发时，发生了强激光与物质的相互作用，导致Si纳米球（NS）的电偶极共振（EDR）与WS纳米膜（NMB）的激子共振之间产生共振耦合。共振耦合的产生调节了纳米结构的共振模式，以实现多维非线性光学响应，这可应用于生物成像和纳米级光源领域。
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