摘要
主要研究了在自由空间中涡旋光束的传输特性。以拉盖尔-高斯光束为例,利用惠更斯-菲涅耳公式和ABCD光学矩阵推出了涡旋光束在自由空间中的传输表达式,并由此分析了几种不同旋转对称光学系统中涡旋光束的特性。研究发现旋转对称的光学系统只会影响光束的衍射特性或曲率半径等,并不会影响涡旋光束的轨道角动量特性。
The propagation characteristic of optical vortex beams in the free space is studied. By using the Huygens- Fresnel formula and ABCD optical matrix, the propagation expression of the Laguerre- Gaussian beams in the free space is derived. The properties of vortex beams in several different rotationally symmetric optical systems are analyzed. The result shows that the rotationally symmetric optical system just influences the diffraction properties or radius of curvature of the beam, but does not influence the orbital angular momentum of the vortex beams.
出处
《激光与光电子学进展》
CSCD
北大核心
2015年第1期220-224,共5页
Laser & Optoelectronics Progress
基金
北京建筑工程学院科学研究基金(101202107)
