| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1533021 | Optics Communications | 2016 | 6 Pages |
Abstract
A silver(Ag)/SiO2/Ag tri-layer grating structure with double slits for beam focusing has been proposed. Compared with the metal/dielectric double-layer grating-based structure, the focusing efficiency of our proposed structure can be greatly enhanced. Numerical simulations using the finite-different time-domain (FDTD) method verify that the focal length and deflection angle can be controlled by adjusting the refractive indexes of dielectric mediums in the two slits.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Wei Su, Chong Zhou, Gaige Zheng, Xiangyin Li,