Far-Field Topological Structure of the Second Harmonic from Higher-Order Poincaré Sphere Beam

Far-Field Topological Structure of the Second Harmonic from Higher-Order Poincaré Sphere Beam

In this paper, the far-field topological structures (FFTSs) of the second harmonic (SH) from higher-order Poincaré sphere (HOPS) beams, including circularly polarized vortex beams (VBs), cylindrically vector beams (CVBs) and elliptically polarized CVBs (EPCVBs), were demonstrated and reported. To be...

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Bibliographic Details
Main Authors: Yangyang Li, Ziping Zhu, Yuanxiang Wang, Jiantai Dou, Li Fan, Bo Li, Youyou Hu
Format: Article
Language:English
Published: MDPI AG 2025-04-01
Series:Photonics
Subjects:
second harmonic
far-field topological structures
higher-order Poincaré sphere beams
Online Access:https://www.mdpi.com/2304-6732/12/5/407
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