Optical eigenmodes; spin and angular momentum

被引:5
|
作者
Mazilu, Michael [1 ]
机构
[1] Univ St Andrews, Sch Phys & Astron, SUPA, St Andrews KY16 9SS, Fife, Scotland
关键词
optical spin; angular momentum; conserving optical currents;
D O I
10.1088/2040-8978/13/6/064009
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Using the infinite optical eigenmode operators defined for Maxwell's equations, we introduce the energy, linear momentum, angular momentum and optical spin of the electromagnetic fields. We show that these different quantities are conserved during the propagation of light in vacuum and are additive only for optical eigenmodes. We further discuss the behaviour of the optical spin during a rotation and its conservation in tightly focused beams.
引用
收藏
页数:4
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