A broadband transparent window in a continuous metal film coated with double layer hybrid dielectric gratings

作者：Cai, Anwei^*; Tan, Jingfeng

来源：Optics Communications, 2017, 403: 193-196.

DOI：10.1016/j.optcom.2017.07.013

• Broadband transmission enhancement
• Plasmons
• Transparent conductor
• Cavity resonance

In this letter, we propose a highly conductive and transparent structure which consists of two high-low index dielectric gratings placed on two sides of a continuous metal film. A broadband transparent window with over 550 nm wavelength width and 80% transmission is achieved in both visible and near-infrared regions. The excitation of hybrid plasmons cavity resonances in the structure generates multiple transmission peaks. Three different transmission peaks overlap to yield a broad transparent window with proper parameters. In addition, the transmission spectrum can easily be modified by tuning structural parameters. Its excellent performance makes our proposed structure a promising candidate for optoelectronics, such as the highly conductive transparent electrodes, displays and solar cells.

• 出版日期2017-11-15
• 单位北京大学