Axial distribution of Gaussian beam limited by a hard-edged aperture
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.
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 email@example.com
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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)