Enhance the resolution of photonic crystal negative refraction imaging by metal grating |
| |
Authors: | Shi Peng Huang Kun Li Yong-ping |
| |
Affiliation: | Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei, Anhui, China. |
| |
Abstract: | The resolution of imaging is limited by the missing of high-frequencies information. The superlens employing negative refraction can compensate for these components. But for the directional coupling of Bloch waves and the low coupling efficiency of large-angle waves, the resolution of subwavelength imaging is not satisfactory. However, the subwavelength metallic grating can produce high-order diffracted waves carrying a lot of high-frequencies information. Therefore, this structure is used to inhibit the zero-order diffraction and enhance the high-order diffraction to achieve super-resolution. |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|