Focusing properties of spirally polarized sinh Gaussian beam

被引：12
|
作者：
Senthilkumar, M. [1 ]
Rajesh, K. B. [2 ]
Udhayakumar, M. [2 ]
Jaroszewicz, Z. [3 ,4 ]
Mahadevan, G. [5 ]
机构：
[1] Bharathiar Univ, R&D Ctr, Dept Phys, Coimbatore, Tamil Nadu, India
[2] Chikkanna Govt Arts Coll, Dept Phys, Tiruppur, Tamil Nadu, India
[3] Inst Appl Opt, Dept Phys Opt, Warsaw, Poland
[4] Natl Inst Telecommun, Warsaw, Poland
[5] Gandhigram Rural Inst, Gandhigram 624302, Tamil Nadu, India
来源：
OPTICS AND LASER TECHNOLOGY | 2019年 / 111卷
关键词：
Focusing property; spirally polarized sinh Gaussian beam; Vector diffraction theory; VECTOR VORTEX BEAMS; OPTICAL NEEDLE; FOCAL SPOT; GENERATION; CREATION; MANIPULATION; LENGTH; CHAIN; FIELD;
D O I：
10.1016/j.optlastec.2018.10.048
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The tight focusing properties of spirally polarized sinh-Gaussian beam is investigated numerically by vector diffraction theory. Results show that the optical intensity in focal region of spirally polarized sinh Gaussian beam can be altered considerably by the beam order, relative waist width and the spiral parameter that indicates the polarization spiral degree of the spirally polarized sinh Gaussian beam. Many novel focal patterns including flattop profile, focal hole axially separated focal spots and focal spot with long focal depth are evolved considerably for the suitable beam parameters. We expect such a tunable focal patterns are useful for optical manipulation of micro particles.
引用
收藏
页码：623 / 628
页数：6
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