Vortex beam generation with variable topological charge based on a spiral slit
We propose a vortex beam generator based on a nanometer spiral slit and explore the propagation rule of the topological charge. Compared to the common methods of generation of a vortex beam with a fixed topological charge, the optical vortex generated by the proposed vortex beam generator has the to...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2019-01-01
|
| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | http://www.degruyter.com/view/j/nanoph.2019.8.issue-2/nanoph-2018-0214/nanoph-2018-0214.xml?format=INT |