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Proceedings Paper

High-power CO2 blending-mode laser beam propagation and focus due to phase shifts
Author(s): Zhiyong Wang; Tao Chen; Yue Ding; Xibin Wang; Tiechuan Zuo
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Paper Abstract

In laser materials processing, the transverse intensity distribution of focus affects processing quality greatly. In this paper, phase shifts is used to analyze high-power CO2 laser beam propagation and focus, especially the change of transverse intensity distribution along beam propagation path. From theory, the phase shifts of high-power blending laser beam determines the transverse intensity distribution. It is also found that if there contains odd mode in blending laser beam, the asymmetry of laser beam is broken. Moreover the high-power laser beam focus and unfocused diagnosis system UFF100 is used to test the beam transverse intensity distribution. Theory is accord with measurement. According to the theory, two optical transformation system is designed to attain the minimum intensity changes.

Paper Details

Date Published: 12 May 1998
PDF: 10 pages
Proc. SPIE 3268, Gas and Chemical Lasers and Intense Beam Applications, (12 May 1998); doi: 10.1117/12.308068
Show Author Affiliations
Zhiyong Wang, Beijing Polytechnic Univ. (China)
Tao Chen, Beijing Polytechnic Univ. (China)
Yue Ding, Beijing Polytechnic Univ. (China)
Xibin Wang, Beijing Polytechnic Univ. (China)
Tiechuan Zuo, Beijing Polytechnic Univ. (China)

Published in SPIE Proceedings Vol. 3268:
Gas and Chemical Lasers and Intense Beam Applications
Ernest A. Dorko; Jeffrey L. Moler, Editor(s)

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