Kang Sung-Mook, Han Jin, Kim Taeseob, Park No-Cheol, Park Kyoung-Su, Min Byung-Kwon, Park Young-Pil
Center for Information Storage Device (CISD), Yonsei University, Seoul, Korea.
Opt Express. 2010 Jan 18;18(2):1576-85. doi: 10.1364/OE.18.001576.
We present a description of a multiple excitation of localized surface plasmons (LSPs) from an Au nanoparticle (NP) array-based ridge waveguide to create a small optical spot size with an extremely strong intensity. Using a numerical finite-difference time-domain method, we find that the optical intensity of the ridge waveguide with an Au NP array is about 700% higher than that of a simple ridge waveguide. Moreover, the spacing between the NPs plays an important role in the multiple excitation of LSPs. The spot size, calculated at FWHM, is 10 nm x 10 nm at a distance of 5 nm from the exit plane.
我们描述了一种基于金纳米颗粒（NP）阵列的脊形波导中局域表面等离子体（LSP）的多重激发，以产生具有极强强度的小光斑尺寸。使用数值有限差分时域方法，我们发现具有金NP阵列的脊形波导的光强度比简单脊形波导的光强度高约700%。此外，NP之间的间距在LSP的多重激发中起着重要作用。在距出射平面5nm处，半高宽计算得到的光斑尺寸为10nm×10nm。
