Tepe Hüseyin U
Micro and Nanotechnology Program, Middle East Technical University, Ankara, 06800, Turkey.
Sci Rep. 2025 May 14;15(1):16761. doi: 10.1038/s41598-025-00878-7.
A hydrodynamic model within the discontinuous Galerkin method is used to simulate the non-linear optical properties of plasmonic gold nanorods. Highly pure spherical and vector spherical harmonics are obtained in the near and far-fields, where each over-tone and polarization represents a unique state. The nano-rods may be treated as switchable quasi-atoms, where the activating mechanism is the intense incident pulse. These properties might become useful in future quantum or optical computation applications. The pure harmonical states are explained by the localized Fermi gas pressure gradients, which is the main force driving the second harmonic generation (SHG).
采用间断伽辽金方法中的流体动力学模型来模拟等离子体金纳米棒的非线性光学性质。在近场和远场中获得了高度纯净的球谐函数和矢量球谐函数，其中每个泛音和极化都代表一种独特的状态。纳米棒可被视为可切换的准原子，其激活机制是强入射脉冲。这些特性在未来的量子或光学计算应用中可能会有用。纯净的谐波状态由局部费米气体压力梯度来解释，这是驱动二次谐波产生（SHG）的主要力量。
