结构光中分数古伊相位的图案恢复
Pattern revivals from fractional Gouy phases in structured light
摘要：
我们调查图案复兴在专门设计的光学结构，结合不同的横模。通常，所得到的图案在自由传播下不被保留，并且由于非同步的古伊相位而被变换。然而，有可能构建这样的结构，其中古伊相位在特定的分数值处同步，从而在相应的纵向位置处恢复初始图案。这种效果用径向结构化光斑来说明，其中光束能量可以被寻址到不同的位置，而不需要中间光学部件，这对于结构化光束的光通信和光学镊子是有用的。
英文摘要：
We investigate pattern revivals in specially designed optical structures that combine different transverse modes. In general, the resulting pattern is not preserved under free propagation and gets transformed due to non synchronized Gouy phases. However, it is possible to build structures in which the Gouy phases synchronize at specific fractional values, thus recovering the initial pattern at the corresponding longitudinal positions. This effect is illustrated with a radially structured light spot in which the beam energy can be addressed to different positions without the need of intermediate optical components, what can be useful for optical communications and optical tweezing with structured beams.
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