光学
栅栏
表面等离子共振
材料科学
雷
表面等离子体子
衍射光栅
梁(结构)
共振(粒子物理)
衍射
局域表面等离子体子
表面等离子体激元
闪耀光栅
光束
等离子体子
物理
原子物理学
纳米颗粒
纳米技术
作者
Nikolai I. Petrov,В. А. Данилов,В. Н. Попов,B. A. Usievich
出处
期刊:Optics Express
[The Optical Society]
日期:2020-02-27
卷期号:28 (5): 7552-7552
被引量:30
摘要
Diffraction of light of a visible spectral range by subwavelength metal gratings has been investigated experimentally and theoretically using rigorous electromagnetic calculations. It has been demonstrated that an effect of surface plasmon resonance (SPR), at which total absorption of light by metal grating can be observed, occurs under certain conditions. Large positive and negative Goos-Hänchen (GH) shifts occur near the SPR. It has been shown that the reflected beam is split into two parts, the relative powers of which depend on the incident beam width and the grating depth. The dependence of the GH shifts on the grating period and grating depth has been investigated for different incident beam widths. The high sensitivity of the GH shift on the incident angle of a light beam near the SPR has been demonstrated.
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