Spin-to-orbital angular momentum conversion in a strongly focused optical beam

被引：506
|
作者：
Zhao, Yiqiong [1 ]
Edgar, J. Scott
Jeffries, Gavin D. M.
McGloin, David
Chiu, Daniel T.
机构：
[1] Univ Washington, Dept Chem, Seattle, WA 98195 USA
[2] Univ Dundee, Elect Engn & Phys Div, Dundee DD1 4HN, Scotland
来源：
PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 07期
关键词：
D O I：
10.1103/PhysRevLett.99.073901
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
As a fundamental property of light, the angular momentum of photons has been of great interest. Here, we demonstrate that optical spin-to-orbital angular momentum conversion can occur in a homogeneous and isotropic medium. This Letter presents both theoretical and experimental studies of this conversion in a tightly focused beam and shows that the orbital rotation speeds of trapped particles are altered because of this conversion as predicted by theory.
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页数：4
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