期刊
OPTICS LETTERS
卷 37, 期 22, 页码 4627-4629出版社
OPTICAL SOC AMER
DOI: 10.1364/OL.37.004627
关键词
-
类别
资金
- National Natural Science Foundation of China [10974101, 61036013, 61138003]
- Ministry of Science and Technology of China [2009DFA52300]
- National Research Foundation of Singapore [NRF-G-CRP 2007-01]
- Tianjin Municipal Science and Technology Commission [11JCZDJC15200]
Plasmonic vortices (PVs) are generated by focusing a radially polarized optical vortex (OV) beam onto a metal surface. The intensity distribution of the PV is registered with a near-field scanning optical microscopy and agrees well with a theoretical prediction as well as numerical calculation. Beside the dark central spot, the numerical calculation also shows an azimuthal Poynting vector belonging to the PV, implying that the orbital angular momentum (OAM) was transferred from the radially polarized OV. To directly verify the OAM, plasmonic trapping experiments with gold micrometer particles are performed and the particle rotation is visualized. Further experiments by varying the topological charge of radially polarized OVs show the corresponding changes in rotation in terms of speed and radius. (C) 2012 Optical Society of America
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据