研究了涡旋光束通过轴棱锥聚焦后的聚焦特性。
Focusing properties of the vortex beams with axicon is studied.
轴棱锥是产生无衍射光束的最有效光学元件之一。
Axicon is one of the most efficient elements to generate Non-diffraction beams.
数值模拟结果表明，涡旋光束经过轴棱锥聚焦后可获得高阶贝塞尔光束。
Numerical calculations show that after focused by the axicon, a vortex beam can convert into a high-order Bessel beam.
利用几何光学的光线追迹法形象地描述了轴棱锥透镜系统产生局域空心光束过程。
Theprocess of the bottle beam generated from an axicon-lens system is described by a novel method based on the ray-tracing.
利用惠更斯菲涅耳衍射积分理论推导了涡旋光束经过轴棱锥聚焦后所获得的聚焦光强分布。
The focusing intensity distribution of vortex beams with axicon by using Huygens-Fresnel diffractive integral is investigated.
研究了不同锥角的轴棱锥对涡旋光束聚焦特性的影响以及不同拓扑电荷数对聚焦特性的影响。
The influence of by different cone angles of the axicon and the different topological number of the vortex beam on the focusing properties of vortex beam is investigated.
分别对传统轴棱锥、开诺全息型轴棱锥、椭圆轴棱锥和梯度轴棱锥的特性进行相关的模拟分析。
The characteristics of traditional axicon, kinoform-axicon, elliptical axicon and gradient-axicon were simulated and analyzed respectively.
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。
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.
提出一种由轴棱锥产生的贝塞尔光干涉整形得到具有自成像塔尔博特效应的近似无衍射局域空心光束的新方法。
A novel technique to produce the self-imaging Talbot effect, nearly non-diffracting bottle beams which were interfered by the two Bessel beams generated from the axicons was proposed.
这些结果表明，改变聚焦透镜的焦距和聚焦透镜到轴棱锥间的距离以及光阑半径，可有效地改变局域空心光束的暗中空区域。
It is shown that by changing the focal length of focal lens and the distance between the axicon and the lens, the center of dark of the bottle beams can be altered effectively.
这些结果表明，改变聚焦透镜的焦距和聚焦透镜到轴棱锥间的距离以及光阑半径，可有效地改变局域空心光束的暗中空区域。
It is shown that by changing the focal length of focal lens and the distance between the axicon and the lens, the center of dark of the bottle beams can be altered effectively.
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