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Axial distribution of Gaussian beam limited by a hard-edged aperture

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Abstract

In this letter, the axial distribution of Gaussian beam limited by a hard-edged aperture is studied. We theoretically analyze the axial diffraction of Gaussian beam limited by a hard-edged aperture, and give the simpler formulas of the axial diffraction intensities of Gaussian beam in Fresnel diffraction field and Fraunhofer diffraction field. The corresponding numerical calculation of axial diffraction intensity distribution of Gaussian beam with different wave waist is provided and the evolution of the diffraction distribution with the wave waist of Gaussian beam is explained. As the especial cases of the truncated Gaussian beam, the Gaussian beam in free space and the parallel light limited by the aperture are discussed too, and the system parameters of the truncated Gaussian beam which can cause it to equal to these cases are given. The theoretical results conform to the numerical analysis.

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所属栏目:diffraction and gratings

收稿日期:2003-12-19

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Shuyun Teng:Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
Liren Liu:Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
Zhu Luan:Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800
Lingyu Wan:Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800

备注:This work was supported by the Science and Technique Minister of China (No. 2002CCA03500) and the National Natural Science Foundation of China (No. 60177016). S. Teng's e-mail address is tengshuyun@yahoo.com.cn

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引用该论文

Shuyun Teng, Liren Liu, Zhu Luan, Lingyu Wan, "Axial distribution of Gaussian beam limited by a hard-edged aperture," Chinese Optics Letters 2(7), 376-378 (2004)

被引情况

【1】郑志敏,丁天怀,张建福. 小孔阵列衍射特性与应用. 光学学报, 2006, 26(2): 294-299

【2】刘宏展,粱瑞生,黄旭光. 圆孔衍射受限时远场高斯光束的近似式及光束发散度的研究. Chinese Optics Letters, 2007, 5(1): 4-7

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