研究目的
To improve the quality and intensity profile of high-order perfect optical vortex (POV) array under tight focusing condition by controlling parameters such as uniform ring width, adjustable ring diameter, and controllable position, numbers, and topological charges.
研究成果
The proposed method successfully generates high-order POV arrays with excellent intensity distribution under tight focusing conditions. The ring width of POV is independent of the topological charge, expanding the potential applications of high-order POVs in optical manipulation, quantum optics, and communications.
研究不足
The study focuses on the theoretical and simulation aspects of generating high-order POVs. Experimental validation and practical implementation challenges are not discussed.
1：Experimental Design and Method Selection:
The method involves using high-order Bessel–Gaussian beam to generate POV under tight focusing condition. Two phase-only holograms are used to control the topological charge and ring width of the incident light.
2：Sample Selection and Data Sources:
The study focuses on the generation and analysis of POVs with different topological charges and diameters.
3：List of Experimental Equipment and Materials:
Liquid-crystal spatial light modulator (SLM) for phase modulation, high Numerical Aperture (NA = 1.32) objective for tight focusing.
4：32) objective for tight focusing.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Generation of BG beam with a phase-only hologram, modulation of topological charge and ring width with an additional phase-only hologram under tight focusing condition.
5：Data Analysis Methods:
Analysis of intensity distribution, ring width, and topological charge of generated POVs. Introduction of a quality factor (Q) for assessing POV quality.
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