Propagation analysis of space-time surface plasmon polariton wave packet excited by light irradiation on nanobeam structure
Propagation analysis of space-time surface plasmon polariton wave packet excited by light irradiation on nanobeam structure
复制标题
光照射激发的时空表面等离子体激元波包在纳米梁结构上的传播分析
DOI：
10.1117/12.2607690
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Kubo Atsushi
中科院分区：
文献类型：
--
作者：
Ichiji Naoki;Yessenov Murat;Schepler Kenneth L.;Abouraddy Ayman F.;Kubo Atsushi
我们研究了时空表面等离子体激元（ST-SPP）波包，表面电磁波与时空波（ST波）的概念对应关系，该时空波通过纳米尺度脊处的光-SPP耦合在金属表面上激发。在时域有限差分法（FDTD）框架下，根据金属表面等离子体的色散关系，确定了满足产生ST波条件的几百个不同频率的平面波的强度和入射角，构造了脉冲激发光。从纳米脊发射的ST-SPP WP具有传播不变性和群速度的可调谐性。
We investigate space-time surface plasmon polariton (ST-SPP) wave packet, a conceptual correspondence of a surface-electromagnetic wave to the space-time wave (ST wave) that is excited on a metal surface through a light-SPP coupling at a nano-scaled ridge. In a framework of the finite-difference time-domain (FDTD) method, a pulsed excitation light was constructed by using a couple of hundred plane waves with different frequencies whose intensity and incident angle were determined to satisfy the conditions for generating ST wave according to the dispersion relation of SPP on the metal surface. The ST-SPP WP launched from the nano-ridge exhibited propagation invariance and tunability of the group velocity.
影响因子：
3.8
作者：
Naoki Ichiji;Yuka Otake;A. Kubo
通讯作者：
Naoki Ichiji;Yuka Otake;A. Kubo