Perfect vector vortex beams play a very important role in understanding complex structured beams due to their vortex nature and nonuniform polarization profiles. However, the generation of these beams suffers from a limited number of topological charges, bulky optical setup, lack of color information, and limited control along the light propagation direction. To tackle these fundamental and technical challenges, a metasurface approach to generating multiple grafted perfect vector vortex beams (GPVVBs) along the light propagation direction. GPVVBs with different colors are observed by changing the observation plane is proposed. Their polarization profiles are indirectly confirmed through the unique features in the modulated intensity profiles with an analyzer. Furthermore, the dynamic control of these beams is realized by continuously changing the incident polarization. Simultaneous control of color and topological charges in GPVVBs along the longitudinal direction provides more degrees of freedom for carrying information and has the potential to impact quantum science, singular optics, and optical communications.

中文翻译：

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在队列中创建多光谱嫁接完美矢量涡旋光束

完美矢量涡旋光束由于其涡旋性质和不均匀偏振剖面，在理解复杂结构光束方面发挥着非常重要的作用。然而，这些光束的产生受到拓扑电荷数量有限、光学装置庞大、缺乏颜色信息以及沿光传播方向的控制有限的影响。为了解决这些基本和技术挑战，采用超表面方法沿光传播方向生成多个嫁接完美矢量涡旋光束 (GPVVB)。提出通过改变观察平面来观察不同颜色的GPVVB。它们的偏振分布通过分析仪调制强度分布的独特特征来间接确认。此外，这些光束的动态控制是通过连续改变入射偏振来实现的。同时控制 GPVVB 沿纵向的颜色和拓扑电荷为携带信息提供了更多的自由度，并有可能影响量子科学、奇异光学和光通信。