光子学报, 2017, 46 (11): 1114001, 网络出版: 2017-12-08
浸液式组合轴棱锥产生长距离无衍射贝塞尔光束
Generating Long-Distance Nondiffracting Bessel Beams with Liquid-immersion Composite-Axicon
摘要
设计了由负轴棱锥、折射率匹配液、正轴棱锥组成的浸液式组合轴棱锥.理论分析表明: 浸液式组合轴棱锥系统与传统轴正棱锥等效, 同时可有效提高最大无衍射传输距离;系统产生的最大无衍射距离与负轴棱锥的底角、折射率, 匹配液的折射率, 正轴棱锥的底角和折射率这五个量有关, 极大地增加了系统设计的灵活性, 拓展了光学材料的选择范围, 降低了光学元件的加工难度.
Abstract
A composite axicon is presented, which consists of a positive axicon and a negative axicon immersed in index-matching liquid. Analysis results show that it is equivalent to conventional positive axicon, and can be used to generate long-distance nondiffracting Bessel beam.The maximum distance without diffraction depends on not only the refractive index of axicons and index-matching liquid, but also the cut angle of axicons. Therefore, it is a flexible method which not only increases the selection of element material, but also reduces the difficulties of element processing.
刘亮, 黄秀军, 徐红艳, 宋镇江, 石德乐, 王姗姗. 浸液式组合轴棱锥产生长距离无衍射贝塞尔光束[J]. 光子学报, 2017, 46(11): 1114001. LIU Liang, HUANG Xiu-jun, XU Hong-yan, SONG Zhen-jiang, SHI De-le, WANG Shan-shan. Generating Long-Distance Nondiffracting Bessel Beams with Liquid-immersion Composite-Axicon[J]. ACTA PHOTONICA SINICA, 2017, 46(11): 1114001.