15 October 2015 Stimulating surface plasmon polaritons over patterned aluminum film by terahertz radiation
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Abstract
In order to investigate the key properties of surface plasmon polaritons (SPPs), a new kind of device based on sub-wavelength aluminum structures (SWASs) have been designed and fabricated with respect to incident radiation in terahertz (THz) range. The device is composed of two layered micro-nano-structures and the utilized substrates are silicon materials in current stage. One silicon substrate is sputtered directly by a thin aluminum film, which is further patterned to shape functioned micro-nano-structures. The THz transmission performances of the devices have been measured according to common optical approaches. The experimental results show that some extraordinary transmission peaks are clearly presented in terahertz transmittance spectrum, which is inconsistent with the classical aperture theory of Bethe. The effects of the developed SPPs are discussed carefully according to the discovered phenomena about the extraordinary optical transmission (EOT).
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Yaping Zhu, Yaping Zhu, Weijun Li, Weijun Li, Jun Luo, Jun Luo, Ying Yuan, Ying Yuan, Yu Lei, Yu Lei, Qing Tong, Qing Tong, Xinyu Zhang, Xinyu Zhang, Changsheng Xie, Changsheng Xie, } "Stimulating surface plasmon polaritons over patterned aluminum film by terahertz radiation", Proc. SPIE 9672, AOPC 2015: Advanced Display Technology; and Micro/Nano Optical Imaging Technologies and Applications, 96720X (15 October 2015); doi: 10.1117/12.2202899; https://doi.org/10.1117/12.2202899
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