用近似散射理论研究波导馈入等离子体纳米阵列的光学特性

B. Alam, A. Ferraro, A. d’Alessandro, R. Caputo, R. Asquini
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引用次数: 1

摘要

分析了在离子交换波导上制备的金纳米柱阵列的光学散射特性。该集成系统被认为是用于荧光检查和拉曼光谱。利用时域有限差分(FDTD)方法和散射理论相结合的方法计算了光的吸收、散射和消光。当一部分激励信号与阵列相互作用时,其余部分流经波导,使模拟盒内的区域通过标准程序使计算复杂化。我们的分析包括解决这个问题的调整和近似,并充分利用时域有限差分的计算能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Optical properties of a waveguide-fed plasmonic nano-array through approximated scattering theory
We analyze the optical scattering properties of an array of Au nano-cylinders fabricated upon an ion-exchanged waveguide. The integrated systems is considered for fluoroscopy and Raman spectroscopy. Absorption, scattering and extinction have been calculated through a combination of Finite Difference Time Domain (FDTD) method and scattering theory. While a portion of the excitation signal interacts with the array, the remaining part flows through the waveguide, enabling areas within the simulation box that complicate the calculation through standard procedures. Our analysis includes adjustments and approximations addressing this issue and making full use of computational capabilities of FDTD.
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