轴棱锥聚焦贝塞尔-谢尔模型光束产生空心光束  

Generation of Hollow Beams Through Focusing J_0-Correlated Schell-Model Beams with Axicon

作　　者：朱清智[1] 吴逢铁[1] 何西[1] 

机构地区：[1]华侨大学信息科学与工程学院福建省光传输与变换重点实验室,福建厦门361021

出　　处：《光学学报》2016年第10期475-480,共6页Acta Optica Sinica

基　　金：国家自然科学基金(61178015);国家自然科学基金青年基金(61605049);福建省科技重大项目(2016H6016)

摘　　要：提出了轴棱锥聚焦贝塞尔-谢尔模型光束产生空心光束的方法。应用交叉谱密度函数模拟了贝塞尔-谢尔模型光束通过轴棱锥后的光强分布。结果表明,空心光束的尺寸随着传播距离的增加逐渐增大。使用Tracepro软件模拟验证了该空心光束的自重建特性。设计相关实验进行验证,且理论分析、数值模拟与实验结果相吻合。此研究结果对于光镊等的实际应用具有重要的参考价值。A new method which can generate hollow beams by focusing J0-correlated Schell-model beams with an axicon is proposed. The light intensity distribution of the J0-correlated Schell-model beams after the axicon is simulated with the cross-spectral density function. The results show that the sizes of the hollow beams increase with the increasing propagation distance. The self-reconstruction property of the hollow beam is investigated by the Tracepro software. The correlation experiment is carried out. The results of the experiments are in agreement with those the theoretical analysis and the numerical simulation. This study will be a reference for applications of optical tweezers.

关 键 词：物理光学 空心光束 第一类零阶贝塞尔-谢尔模型 自重建 轴棱锥 

分 类 号：O436.1[机械工程—光学工程]