Characterization of the Vortex Beam by Fermat’s Spiral
In this paper, we characterize the helical beam structure through an analysis of the spiral character of the phase distribution inside a light beam. In particular, we show that a line connected with the 2π phase jump in the Laguerre–Gauss beam can be described by a Fermat’s spiral. We propose a nume...
| Published in: | Photonics |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2020-11-01
|
| Subjects: | |
| Online Access: | https://www.mdpi.com/2304-6732/7/4/102 |