Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7925411 | Optics Communications | 2018 | 4 Pages |
Abstract
Optical microcavities with whispering-gallery modes (WGMs) have been indispensable in both photonic researches and applications. Besides, metasurfaces, have attracted much attention recently due to their strong abilities to manipulate electromagnetic waves. Here, combining these two optical elements together, we show a tubular cavity can convert input propagating cylindrical waves into directed localized surface waves (SWs), enabling the circulating like WGMs along the wall surface of the designed tubular cavity. Finite element method (FEM) simulations demonstrate that such near-field WGM shows both large chirality and high local field. This work may stimulate interesting potential applications in e.g. directional emission, sensing, and lasing.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Yuzhou Qin, Yangfu Fang, Lu Wang, Shiwei Tang, Shulin Sun, Zhaowei Liu, Yongfeng Mei,