| 柱透镜聚焦高阶Bessel光束产生焦散光束 |
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| 引用本文： | 冯聪,吴逢铁,谢晓霞.柱透镜聚焦高阶Bessel光束产生焦散光束[J].光子学报,2016(12):111-115. |
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| 作者姓名： | 冯聪 吴逢铁 谢晓霞 |
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| 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 |
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| 基金项目： | 国家自然科学基金(61178015)，国家自然科学青年基金(61605049)，福建省科技重大项目(No.2016H6016)资助 The National Natural Science Foundation of China(.61178015 |
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| 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.
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| 关 键 词： | 物理光学 高阶Bessel光束 轴棱锥 柱透镜 焦散光束 衍射理论 |
High-order Bessel Beam Focused by Cylindrical Lens Generated Caustic Optical Beam |
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| Abstract: | 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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| Keywords: | Physical optics High-order Bessel beam Axicon lens Cylindrical lens Caustic optical beam Diffraction theory |
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