基于Thue-Morse透镜的轴向多涡旋光束  

Axial Multi-Vortex Beam Based on Thue-Morse Lens

作　　者：刘孟思 夏天 程书博 Mengs;Xia Tian;Cheng Shubo(School of Physics and Optoelectronic Engineering,Yangtze University,Jingzhou,Hubei 434023,China;School of Physics and Electronics,Central South University,Changsha,Hunan 410083,China)

机构地区：[1]长江大学物理与光电工程学院,湖北荆州434023 [2]中南大学物理与电子学院,湖南长沙410083

出　　处：《光学学报》2018年第11期29-34,共6页Acta Optica Sinica

基　　金：国家自然科学基金(11747105);湖北省教育厅青年基金(Q20181312)

摘　　要：基于Thue-Morse非周期数学序列设计了一种新型衍射光子学元件——Thue-Morse多焦点涡旋透镜。与菲涅耳涡旋透镜相比,该类型透镜沿轴向具有多个聚焦涡旋且对称位置处的聚焦涡旋具有同等强度。理论与实验证明,Thue-Morse涡旋透镜具有独特的光学性质。该类型透镜可以产生涡旋光束阵列,实现多平面金属微粒、低折射率介质微粒等的束缚,在微纳光学领域具有潜在的应用价值。Based on the Thue-Morse aperiodic mathematical sequence, a new kind of diffractive optical elements （DOEs）, which is Thue-Morse multi-focal vortex lens, is proposed. Compared with the Fresnel vortex lens, the generated beam by the Thue-Morse vortex lens possesses the optical vortices embedded at the axial loci and the symmetry optical vortices have the equal intensity. The simulations and experiments verify the unique diffraction properties of the Thue-Morse vortex lens, which can generate vortices array and realize the trappings of metal particles and dielectric particles of low refractive index. The Thue-Morse vortex lens can be potentially applied in the research fields of micro and nanophotonics.

关 键 词：衍射 Thue—Morse涡旋透镜 Thue-Morse序列 衍射特性 衍射光学元件 

分 类 号：O436[机械工程—光学工程]