吴志伟. 产生周期性局域空心光束的新型轴棱锥[J]. 红外与激光工程, 2013, 42(3): 733-737.
引用本文: 吴志伟. 产生周期性局域空心光束的新型轴棱锥[J]. 红外与激光工程, 2013, 42(3): 733-737.
Wu Zhiwei. Periodic bottle beam generated by novel axicon[J]. Infrared and Laser Engineering, 2013, 42(3): 733-737.
Citation: Wu Zhiwei. Periodic bottle beam generated by novel axicon[J]. Infrared and Laser Engineering, 2013, 42(3): 733-737.

产生周期性局域空心光束的新型轴棱锥

Periodic bottle beam generated by novel axicon

  • 摘要: 周期性局域空心光束是一种在科研上具有较高实用价值的光束。介绍了一种用于产生周期性局域空心光束的新型轴棱锥结构,可以通过在正轴棱锥底部磨削一个与本体同轴,但是底角和尺寸都较小的内凹圆锥面制成。采用几何光学的理论对新型光学元件的光束变换特性进行分析,结果表明其可以等效为两个不同底角的正轴棱锥的组合,并对周期性局域空心光束的相关参数进行计算。用衍射积分理论分析和模拟了新型轴棱锥后的光强分布特性,所得分析结果与几何光学分析基本一致。研究表明,平面波正面入射新型轴棱锥可以产生周期性局域空心光束。

     

    Abstract: Periodic bottle beam is a beam that has high practical value on scientific research. A novel axicon for generating periodic bottle beam was proposed. It was designed by grinding a conical surface whose dimension and conical angle were smaller than body in the middle of element bottom. The beam transformation property of this element was analyzed with geometrical optics theory, and the conclusion shows that its property is the same as the combination of two normal positive axicon with different conical angle. Besides, the relevant parameters were also calculated with geometrical optics theory. The intensity distribution was simulated by diffraction and interference theory. The results are basically consistent with the geometrical optics. The research shows that when a plane wave illuminates on the novel axicon, periodic bottle beam is formed.

     

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