An active hybrid plasmonic metamaterial

作者：Gu Jianqiang^*; Singh Ranjan; Azad Abul K; Han Jiaguang; Taylor Antoinette J; O' Hara John F; Zhang Weili

来源：Optical Materials Express, 2012, 2(1): 31-37.

DOI：10.1364/OME.2.000031

We demonstrate an engineered composite film that dynamically switches resonant transmission behavior of terahertz radiation from band-stop to band-pass under appropriate optical pumping. In the absence of pumping, a resonant band-stop behavior is observed arising from metallic split-ring-resonators fabricated on an epitaxial silicon film that was already patterned into a periodic hole-array. Pumping with external infrared light, the silicon film becomes quasi-metallic, damping the planar metamaterial response and enabling a band-pass surface-plasmon resonance through the now conducting hole array. By leveraging two separate types of electromagnetic behaviors simultaneously, this composite chip paves a way for developing unique hybrid planar metamaterials.

• 出版日期2012-1-1
• 单位天津大学