Date Published: February 25, 2013
Publisher: WILEY-VCH Verlag
Author(s): Chia Min Chang, Ming Lun Tseng, Bo Han Cheng, Cheng Hung Chu, You Zhe Ho, Hsin Wei Huang, Yung-Chiang Lan, Ding-Wei Huang, Ai Qun Liu, Din Ping Tsai.
Simulation: A TM mode plane wave with wavelength of 532 nm is used to excite the surface wave on Au thin film, and the incident angle is 48.8° (larger than the critical angle), as shown in Figure 1c. The spatial grid size and full computation space are set to 5.0 nm × 5.0 nm × 5.0 nm and 5 μm × 5 μm × 2.5 μm, respectively, and a perfect match layer (PML) is used as the boundaries in the X and Y direction. The relative permittivity of Au is given by the Lorentz-Drude model.17 Due to the large size of the simulated region, a distributed memory parallelism and three-dimensional FDTD simulation software MEEP is used.18 This simulation environment is simulated by using the Advanced Large-scale Parallel Supercluster (ALPS) computing facilities at the National Center for High-performance Computing in Taiwan.