科研之友
微信
新浪微博
Facebook
分享链接
摘要
We demonstrate theoretically that the multiple and wideband near-perfect absorption can be realized in heterostructures that are composed of two different truncated photonic crystals (PCs), where one contains conducting-indium tin oxide (ITO) films. Furthermore, near-complete absorption can be achieved over a wide angle of incidence for both TE and TM polarizations. The width of the absorption band is determined by the overlapped range between the pass band of the PC containing ITO films and the forbidden band of the other PC. Moreover, the absorption band can be broadened by increasing the incident angle for the TE polarization. These absorption properties are important for designing multiple or broadband near-perfect absorbers in the visible and near infrared regions.
