摘要
A ring-shaped focus, such as a focused vortex beam, has played an important role in microfabrication and optical tweezers.The shape and diameter of the ring-shaped focus can be easily adjusted by the topological charge of the vortex. However,the flow energy is also related to the topological charge, making the individual control of diameter and flow energy of the vortex beam impossible. Meanwhile, the shape of the focus of the vortex beam remains in the hollow ring. Expanding the shape of focus of structural light broadens the applications of the vortex beam in the field of microfabrication. Here, we proposed a ring-shaped focus with controllable gaps by multiplexing the vortex beam and annular beam. The multiplexed beam has several advantages, such as the diameter and flow energy of the focal point can be individually controlled and are not affected by the zero-order beam, and the gap size and position are controllable.
作者
张晨初
叶罕昌
曹锐
姬生云
张衡
赵麟寒
吴思竹
翟华
Chenchu Zhang;Hanchang Ye;Rui Cao;Shengyun Ji;Heng Zhang;Linhan Zhao;Sizhu Wu;Hua Zhai(Anhui Province Key Laboratory of Aerospace Structural Parts Forming Technology and Equipment,Institute of Industry and Equipment Technology,Hefei University of Technology,Hefei 230009,China;Caltech Optical Imaging Laboratory,Andrew and Peggy Cherng Department of Medical Engineering,California Institute of Technology,Pasadena,CA 91125,USA;Hefei National Laboratory for Physical Sciences at the Microscale and CAS Key Laboratory of Mechanical Behavior and Design of Materials,Department of Precision Machinery and Precision Instrumentation,University of Science and Technology of China,Hefei 230026,China)
基金
This work was supported by the National Natural Science Foundation of China(Nos.62005262 and 51875160)
Fundamental Research Funds for the Central Universities(Nos.PA2020GDSK0077 and PA2020GDKC0010)。
