中国激光, 2020, 47 (7): 0702003, 网络出版: 2020-07-10
激光直写制备完美涡旋光束微波带片 下载: 952次
Fabrication of Perfect Vortex Beam Microplate Using Direct Laser Writing
物理光学 完美涡旋光束 激光直写 轨道角动量 干涉 physical optics perfect vortex beam direct laser writing orbital angular momentum interference
摘要
完美涡旋光束的涡旋半径与拓扑荷数无关,且携带有轨道角动量,这使得完美涡旋光束在光学通信、量子光学以及激光制造等领域被广泛应用。利用双光子聚合的激光直写技术制备出了可产生完美涡旋光束的径向相移螺旋型波带片。通过改变波带片的径向相移控制参数,实现了对完美涡旋光束涡旋半径的调控。同时,通过干涉图样验证了涡旋光束携带的轨道角动量与设计的拓扑荷数相吻合。本工作可为光子芯片集成的快速设计制造提供一定参考。
Abstract
Vortex radii of perfect vortex beams are independent of the topological charge and carry orbital angular momentum, and these beams have wide applications in optical communications, quantum optics, and laser manufacturing. In this study, radial phase-shifted spiral zone plates that can generate perfect vortex beams have been fabricated using two-photon photopolymerization direct laser writing. The vortex radii of perfect vortex beams are adjusted by changing the control parameter of the radial phase-shift. Moreover, interference patterns verify that the orbital angular momentum carried by vortex beams is consistent with the designed topological charge. Thus, this study can provide a reference for the rapid design and manufacture of photonic chip integration.
秦燕亮, 黄轶, 涂谱, 张琦, 赵茗, 杨振宇. 激光直写制备完美涡旋光束微波带片[J]. 中国激光, 2020, 47(7): 0702003. Qin Yanliang, Huang Yi, Tu Pu, Zhang Qi, Zhao Ming, Yang Zhenyu. Fabrication of Perfect Vortex Beam Microplate Using Direct Laser Writing[J]. Chinese Journal of Lasers, 2020, 47(7): 0702003.