中国激光, 2016, 43 (12): 1205002, 网络出版: 2016-12-09   

轴棱锥顶点离轴加工误差对贝塞尔光束的影响

Influence of Axicon Vertex off Axis Machining Error on Bessel Beams
作者单位
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
摘要
理论推导了轴棱锥顶点离轴加工误差的透射率函数。在惠更斯-菲涅耳衍射积分理论和稳相近似法的基础上,推导出顶点离轴轴棱锥后的衍射光场表达式,分析了顶点离轴加工误差对贝塞尔光束的影响。对顶点离轴轴棱锥后衍射光场进行数值模拟,结果表明,当为理想加工轴棱锥时,轴棱锥后的光场分布为近似理想贝塞尔光束;当存在加工误差时,衍射光斑对半分离。相同距离处,分离程度随顶点离轴误差的增加而增加;相同的顶点离轴误差下,分离程度随传输距离的增加而增加。同时,还研究了这种元件的加工厚度对光斑分离程度的影响,结果表明,随着加工厚度的增加,光斑分离程度也会逐步增大。研究结果对轴棱锥加工、贝塞尔光束应用等具有一定的指导意义。
Abstract
The transmittance function of the axicon vertex off axis machining error is derived theoretically. Based on Huygens-Fresnel diffraction integral theory and stationary phase method, the expression of diffraction field behind the vertex off axis machining error is derived and the influence of the vertex off axis machining error in an axicon on the Bessel beams is analyzed. The expression of diffraction field behind the axicon is simulated numerically. Results show that if the axicon is ideal manufactured, the field distribution behind the axicon is approximately an ideal Bessel beam, and if the machining error exists, the diffraction beam pattern will split in half. At the same distance, the separation of the beam pattern will increase with the increasing of the vertex off axis machining error, with the same vertex off axis machining error, the separation of the beam pattern will increase with the increasing of the transmission distance. Meanwhile, the influence of the thickness of the element on the separation of the beam pattern is also studied. The results show that the separation degree of the beam pattern increases gradually with the increasing of the thickness. The findings offer some guidance for axicon machining and the application of Bessel beams, and so forth.

胡润, 吴逢铁. 轴棱锥顶点离轴加工误差对贝塞尔光束的影响[J]. 中国激光, 2016, 43(12): 1205002. Hu Run, Wu Fengtie. Influence of Axicon Vertex off Axis Machining Error on Bessel Beams[J]. Chinese Journal of Lasers, 2016, 43(12): 1205002.

本文已被 8 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!