Pu Jixiong, Dong Meimei, Wang Tao
Department of Electronic Science and Technology, Huaqiao University, Quanzhou, Fujian, China.
Appl Opt. 2006 Oct 10;45(29):7553-6. doi: 10.1364/ao.45.007553.
We report, what is to our knowledge, the first experimental realization of partially coherent bottle beams. It is shown that partially coherent bottle beams can be achieved by the focusing of partially coherent light with an axicon-lens system. The influence of the spatial coherence of the incident partially coherent light and other parameters, such as the radius of the limiting aperture of the axicon and the distance between the axicon and the lens, on the size of the bottle beams is investigated. We find that the longer the spatial coherence length, the larger the size of the resultant bottle beams. This dependence of the size of the bottle beams on the spatial coherence of the incident light provides a facile approach for generating adjustable partially coherent bottle beams. This kind of partially coherent bottle beam may have applications in atom optics, such as in atom trapping and atom guiding, etc.
据我们所知，我们报道了部分相干瓶形光束的首次实验实现。结果表明，通过使用轴棱锥 - 透镜系统对部分相干光进行聚焦，可以实现部分相干瓶形光束。研究了入射部分相干光的空间相干性以及其他参数，如轴棱锥的限制孔径半径和轴棱锥与透镜之间的距离，对瓶形光束尺寸的影响。我们发现，空间相干长度越长，所产生的瓶形光束尺寸越大。瓶形光束尺寸对入射光空间相干性的这种依赖性为生成可调谐的部分相干瓶形光束提供了一种简便方法。这种部分相干瓶形光束可能在原子光学中有应用，例如在原子捕获和原子引导等方面。
