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通过双缝等离子体天线的超常光学传输的超快动力学

Ultrafast Dynamics of Extraordinary Optical Transmission through Two-Slit Plasmonic Antenna.

作者信息

Du Guangqing, Yu Fangrui, Lu Yu, Kai Lin, Chen Caiyi, Yang Qing, Hou Xun, Chen Feng

机构信息

State Key Laboratory for Manufacturing System Engineering and Shaanxi Key Laboratory of Photonics Technology for Information, School of Electronic Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.

出版信息

Nanomaterials (Basel). 2023 Aug 9;13(16):2284. doi: 10.3390/nano13162284.

DOI:10.3390/nano13162284
PMID:37630869
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10458408/
Abstract

We have theoretically investigated the spatial-temporal dynamics of extraordinary optical transmission (EOT) through a two-slit plasmonic antenna under femtosecond laser dual-beam irradiation. The dynamic interference of the crossed femtosecond laser dual-beam with the transiently excited surface plasmon polariton waves are proposed to characterize the particular spatial-temporal evolutions of EOT. It is revealed that the dynamic EOT can be flexibly switched with tunable symmetry through the respective slit of a two-slit plasmonic antenna by manipulating the phase correlation of the crossed femtosecond laser dual-beam. This is explained as tunable interference dynamics by phase control of surface plasmon polariton waves, allowing the dynamic modulation of EOT at optimized oblique incidences of dual-beams. Furthermore, we have obtained the unobserved traits of symmetry-broken transient spectra of EOT from the respective up- and down-slit of the antenna under crossed femtosecond laser dual-beam irradiation. This study can provide fundamental insights into the ultrafast dynamics of EOT in two-slit plasmonic antennas, which can be helpful to advance a wide range of applications, such as ultrafast plasmonic switch, ultrahigh resolution imaging, the transient amplification of non-linear effects, etc.

摘要

我们从理论上研究了在飞秒激光双光束照射下，通过双缝等离子体天线的异常光传输（EOT）的时空动力学。提出交叉飞秒激光双光束与瞬态激发的表面等离子体激元波的动态干涉来表征EOT的特定时空演化。研究发现，通过操纵交叉飞秒激光双光束的相位相关性，可以通过双缝等离子体天线的各个狭缝灵活地切换具有可调对称性的动态EOT。这被解释为通过表面等离子体激元波的相位控制实现的可调干涉动力学，允许在双光束的优化斜入射下对EOT进行动态调制。此外，我们在交叉飞秒激光双光束照射下，从天线的上、下狭缝分别获得了EOT的对称破缺瞬态光谱的未观察到的特征。这项研究可以为双缝等离子体天线中EOT的超快动力学提供基本见解，这有助于推动广泛的应用，如超快等离子体开关、超高分辨率成像、非线性效应的瞬态放大等。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/64dce5ab9eeb/nanomaterials-13-02284-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/d9b07ca39d6b/nanomaterials-13-02284-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/f1a6dd1ef9d7/nanomaterials-13-02284-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/4de380e0f2bb/nanomaterials-13-02284-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/17690845005c/nanomaterials-13-02284-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/bbe16cc3d6db/nanomaterials-13-02284-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/64dce5ab9eeb/nanomaterials-13-02284-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/d9b07ca39d6b/nanomaterials-13-02284-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/f1a6dd1ef9d7/nanomaterials-13-02284-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/4de380e0f2bb/nanomaterials-13-02284-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/17690845005c/nanomaterials-13-02284-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/bbe16cc3d6db/nanomaterials-13-02284-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3720/10458408/64dce5ab9eeb/nanomaterials-13-02284-g006.jpg

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