Bessel光束经椭圆环形孔径后的衍射光场?

物理学报

Bessel光束经椭圆环形孔径后的衍射光场?

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谢晓霞, 王硕琛, 吴逢铁. 2015: Bessel光束经椭圆环形孔径后的衍射光场?, 物理学报, null(12): 124201. doi: 10.7498/aps.64.124201

引用本文:

谢晓霞, 王硕琛, 吴逢铁. 2015: Bessel光束经椭圆环形孔径后的衍射光场?, 物理学报, null(12): 124201. doi: 10.7498/aps.64.124201

Xie Xiao-Xia, Wang Shuo-Chen, Wu Feng-Tie. 2015: Diffraction optical field of the Bessel b eam through elliptical annular ap erture, Acta Physica Sinica, null(12): 124201. doi: 10.7498/aps.64.124201

Citation:

Xie Xiao-Xia, Wang Shuo-Chen, Wu Feng-Tie. 2015: Diffraction optical field of the Bessel b eam through elliptical annular ap erture, Acta Physica Sinica, null(12): 124201. doi: 10.7498/aps.64.124201

Bessel光束经椭圆环形孔径后的衍射光场?

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，厦门 361021

Diffraction optical field of the Bessel b eam through elliptical annular ap erture

摘要: 基于菲涅耳衍射积分理论及硬边孔径的复高斯函数展开法导出了Bessel光束经椭圆环形孔径后的光场表达式，数值模拟了其光场的强度分布。研究了Bessel光束经椭圆环形孔径后的光场变化及其传播过程；在实验上利用轴棱锥输出的近似无衍射Bessel光，通过椭圆环形孔径，使用电荷耦合器件拍摄得到不同传播距离处的光强分布。理论结果和实验结果均表明无衍射光束经椭圆环形孔径后会产生空心光束。
- Bessel光束 /
- 椭圆环形孔径 /
- 空心光束 /
- 衍射理论
Abstract: Based on Fresnel diffraction theory and complex Gaussian function expansion of hard-edged aperture, the optical field formula of Bessel beam propagating through an elliptical annular aperture is derived, and the transverse intensity distribution of the beam is numerically simulated. The changes of the optical field and the propagation process of the diffracted beam behind the elliptical annular aperture are studied. In the experiment for the first time, a quasi non-diffracting beam is generated by an axicon and the patterns that are due to the beam diffraction by an elliptical annular aperture at different propagation distances are observed with a charge-coupled device camera. The theoretical analysis and experimental results both show that Bessel beam passing through an elliptical annular aperture can generate a hollow beam.

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Bessel光束经椭圆环形孔径后的衍射光场?

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，厦门 361021

关键词:

摘要: 基于菲涅耳衍射积分理论及硬边孔径的复高斯函数展开法导出了Bessel光束经椭圆环形孔径后的光场表达式，数值模拟了其光场的强度分布。研究了Bessel光束经椭圆环形孔径后的光场变化及其传播过程；在实验上利用轴棱锥输出的近似无衍射Bessel光，通过椭圆环形孔径，使用电荷耦合器件拍摄得到不同传播距离处的光强分布。理论结果和实验结果均表明无衍射光束经椭圆环形孔径后会产生空心光束。

English Abstract

Diffraction optical field of the Bessel b eam through elliptical annular ap erture

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，厦门 361021

Keywords:

Abstract: Based on Fresnel diffraction theory and complex Gaussian function expansion of hard-edged aperture, the optical field formula of Bessel beam propagating through an elliptical annular aperture is derived, and the transverse intensity distribution of the beam is numerically simulated. The changes of the optical field and the propagation process of the diffracted beam behind the elliptical annular aperture are studied. In the experiment for the first time, a quasi non-diffracting beam is generated by an axicon and the patterns that are due to the beam diffraction by an elliptical annular aperture at different propagation distances are observed with a charge-coupled device camera. The theoretical analysis and experimental results both show that Bessel beam passing through an elliptical annular aperture can generate a hollow beam.

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