The structure and beam propagation property of helical axicon is analyzed. Based on diffraction integral theory,propagation process behind helical axiocn incident by diverging spherical wave and Laguerre-Gauss beam is studied.

分析了螺旋轴棱锥的结构和光传输特性,基于衍射积分理论研究了发散球面波和拉盖尔-高斯光束经螺旋轴棱锥后的传输过程。

Results show that if the cross-section of the axicon is ideally manufactured in circular symmetry,the field distribution behind the axicon is approximately an ideal Bessel beam.

计算结果指出，当轴棱锥的截面为圆对称的理想加工时，轴棱锥产生的光场分布为近似理想的零阶贝塞耳光。