Jiang Yu-Wei, Tzuang Lawrence Dah-Ching, Ye Yi-Han, Wu Yi-Ting, Tsai Ming-Wei, Chen Chia-Yi, Lee Si-Chen
Department of Electrical Engineering, Graduate Institute of Electronics Engineering, National Taiwan University, Taipei 106, Taiwan, Republic of China.
Opt Express. 2009 Feb 16;17(4):2631-7. doi: 10.1364/oe.17.002631.
The extraordinary transmission through silver film perforated with rectangular hole array with different aspect ratio was investigated. It was found that when the aspect ratio exceeded 7, the propagating surface plasmon polaritons (SPPs) transformed to localized resonance mode. The role of the Wood's anomaly on the shape of the transmission spectrum is investigated. By designing the rectangular hole arrays in a rectangular lattice, the Wood's anomaly can be shifted far apart from the transmission peak, the real localized resonance peak wavelength was identified and fitted well with the theoretical calculation using a simplified transmission-line model.
研究了通过具有不同纵横比的矩形孔阵列穿孔的银膜的异常传输。发现当纵横比超过7时，传播的表面等离激元极化激元（SPP）转变为局域共振模式。研究了伍德异常对透射光谱形状的作用。通过在矩形晶格中设计矩形孔阵列，可以使伍德异常远离透射峰，确定了真实的局域共振峰波长，并使用简化的传输线模型与理论计算拟合良好。
