摘要
基于Collins衍射积分公式,通过数值计算的方法,研究了异常涡旋光束在手征介质中的传输特性。研究结果表明异常涡旋光束在手征介质中被分化为左旋偏振光和右旋偏振光,其拓扑荷数的变化直接影响了左旋偏振光和右旋偏振光在光束中心处的相互干涉现象。当束宽变大,异常涡旋光束的能量及聚焦效应也随之增强。
The propagation properties of anomalous vortex（AV） beams in the chiral medium are numerically studied based on Collins diffraction integral formula. The results show that the AV beam can split into a left-handed circular polarization （LCP） light and a right-handed circular polarization （RCP） light when it is incident upon a slab of a chiral medium. The change of the topological number directly affects the interference phenomenon caused by LCP light and RCP light at the beam center. The energy and the focusing effect of the AV beam increase with the increase of beam width.
出处
《激光与光电子学进展》
CSCD
北大核心
2016年第9期224-229,共6页
Laser & Optoelectronics Progress
基金
国家自然科学基金(61107055)
江苏省自然科学基金(BK20141169)
关键词
物理光学
异常涡旋光束
手征介质
传输特性
聚焦效应
physical optics
anomalous vortex beam
chiral medium
propagation property
focusing effect
