Holographic formation of optical-vortex filaments

被引:153
作者
Sacks, ZS [1 ]
Rozas, D [1 ]
Swartzlander, GA [1 ]
机构
[1] Worcester Polytech Inst, Dept Phys, Worcester, MA 01609 USA
关键词
D O I
10.1364/JOSAB.15.002226
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
An optical-vortex filament is characterized by a dark core of vanishing size and fluidlike propagation dynamics in the near-field region. This type of phase singularity does not naturally occur as an eigenmode of a cylindrically symmetric system, but it can be easily formed by computer-generated holography. The size of the core is an important attribute affecting vortex-vortex interactions within a laser beam. Here we demonstrate a means to minimize the core size, and we experimentally show that a beam-to-core size ratio exceeding 175 may be readily achieved. (C) 1998 Optical Society of America [S0740-3224(98)01708-1] OCIS code: 090.1760.
引用
收藏
页码:2226 / 2234
页数:9
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