Spoof Plasmon Surfaces: A Novel Platform for THz Sensing

• DOI: 10.1002/adom.201300146
• Publication Date: 2013-06-07T08:42:44Z
• Authors: Binghao Ng; Jianfeng Wu; Stephen M. Hanham; Antonio I. Fernán...; Norbert Klein; Yun Fook Liew; Mark B. H. Breese; Minghui Hong; Stefan A. Maier
• Keywords: Prism; Figure of Merit

Spoof plasmon surfaces consisting of linear arrays subwavelength grooves are proposed as a novel platform for THz sensing. The tightly confined spoof plasmons, coupled via an Otto prism setup, sensitive to the refractive index dielectric filling grooves. Phase jumps at resonances used readout response An overall sensitivity 0.49 RIU−1 with figures-of-merit high 49 achieved.