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Proceedings Paper

Propagation property of high-power laser beam through spatial filter
Author(s): Kangsong Tang; Shuangchun Wen; Kaiming You; Hua Yang
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Paper Abstract

We report on a theoretical analysis of propagation of monochromatic and broadband high-power laser beam through spatial filter. The law of formation of low-frequency modulation rings due to diffraction is obtained. It is found that the filling factor or the intensity modulation contrast of the laser beam is sensitive to times of diffraction limit of the filter’s pinhole. The uniformity of beam can be significantly improved by adjusting times of diffraction limit. For the same filter parameters, the broadband beam has a more uniform diffraction profile than the monochromatic beam, suggesting that the laser beam with a proper amount of bandwidth can suppress the harmful effect of diffraction to some extent.

Paper Details

Date Published: 26 January 2005
PDF: 5 pages
Proc. SPIE 5627, High-Power Lasers and Applications III, (26 January 2005); doi: 10.1117/12.575722
Show Author Affiliations
Kangsong Tang, Hunan Univ. (China)
Shuangchun Wen, Hunan Univ. (China)
Kaiming You, Hunan Univ. (China)
Wuhan Univ. of Technology (China)
Hua Yang, Hunan Univ. (China)

Published in SPIE Proceedings Vol. 5627:
High-Power Lasers and Applications III
Dianyuan Fan; Ken-ichi Ueda; Jongmin Lee, Editor(s)

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