Broadband Extraordinary Optical Transmission Through a Multilayer Structure With a Periodic Nanoslit Array

IEEE Photonics Journal

Gang Wang¹  Zhongyue Zhang¹  Xiaojun Tian¹  Guian Li²  Tong Fu²  Yu Qu² 

[1]Inf. Technol., Shaanxi Normal Univ., Xi'an, China

[2]

[3]Sch. of Phys. &

关键词: Surface plasmons;    Extraordinary optical transmission;    Multilayers;    Spectral properties;    Resonance;   

DOI  :  10.1109/JPHOT.2015.2427736

来源: DOAJ

【 摘 要 】

Extraordinary optical transmission (EOT) of metallic film perforated by a periodic array of subwavelength holes is significant in photoelectric devices. In this paper, a multilayer structure with periodic nanoslit arrays is proposed to achieve broadband EOT in infrared. The optical transmission properties of such structure are simulated through the finite-element method. Greatly enhanced transmissions over a broad spectral range are observed in near-infrared wavelengths, and many enhanced electric fields occur in the narrower slit. In addition, the effects of structural parameters on transmission properties are also investigated. All these findings could guide the design of devices with broadband-enhanced transmission and high electric-field concentration.

【 授权许可】

Unknown