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中文摘要：
研究了高阶Bessel光束经过柱透镜后的光场分布特性.在广义惠更斯-菲涅尔衍射积分理论基础上,推导出高阶Bessel光束透过柱透镜后的衍射光场分布表达式;并利用MATLAB和MATHCAD模拟了不同传播距离处的光强分布.实验上,利用轴棱锥和螺旋相位板产生不同阶数的高阶Bessel光束,并使产生的高阶Bessel光束经过柱透镜,最后用CCD记录下不同距离处的衍射光场.研究结果表明,高阶Bessel光束经过柱透镜形成唇状的焦散光束.
英文摘要：
The distribution characteristics of optical field of high-order Bessel beam after pasing through the cylindrical lens were studied. Based on the generalized Huygens Fresnel diffraction integral theory, the expression of the diffractive light intensity distribution of which the high-order Bessel beam passing through cylindrical lens was derived. And the intensity distribution in different propagative distances was numericaly simulated by MATLAB and MATHCAD. In the experiment, the high-order Bessel beam was generated by axicon lens and spiral phase plate, and passed through the cylindrical lens. The optical intensity distribution in different propagation distances was captured by a CCD camera. The study results show that, a high-order Bessel beam through the cylindrical lens can form a lip-shaped caustic optical beam.
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