Generation and control of optical vortices using left-handed materials

被引：17
|
作者：
Webb, Kevin J. [1 ]
Yang, Ming-Chuan [1 ]
机构：
[1] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA
来源：
PHYSICAL REVIEW E | 2006年 / 74卷 / 01期
关键词：
D O I：
10.1103/PhysRevE.74.016601
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Optical vortices are shown to be generated in the near-field through interference between a propagating wave and the amplified evanescent field in a slab of lossy left-handed material. While small loss adversely impacts the sub-wavelength performance in the lens application, the vortex character shown relies on some degree of imperfection. These vortices can be controlled by means of gain/loss and the incident field.
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页数：4
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