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Optimization of an optical system used for laser beam transformation

Published online by Cambridge University Press:  22 February 2006

Chongguang Li ,
Agnès Delmas  and
Junchang Li
Chongguang Li*
Affiliation:
Institute of Applied Laser, Kunming University of Science and Technology, 68 Wenchang Road, 121 Street, Kunming 650093, Yunnan, P.R. China
Agnès Delmas
Affiliation:
CETHIL UMR 5008 INSA de Lyon, Bât. S. Carnot, 20 avenue Albert Einstein, 69621 Villeurbanne Cedex, France
Junchang Li
Affiliation:
Institute of Applied Laser, Kunming University of Science and Technology, 68 Wenchang Road, 121 Street, Kunming 650093, Yunnan, P.R. China
*
[email protected] [email protected]
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Abstract

The principle of a specific optical device which was designed to homogenize the power density distribution of a CO2 laser beam is described in the paper. The detailed formulas to express the relation between power density distribution of converted beam and optical parameters of device are given. Based on this relation, a scheme to optimize the device is presented. The power density distributions simulated by computer before and after optimization are given. A tentative criterion to estimate the uniformity of a beam spot in which there are interference fringes, is put forward.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 33 , Issue 3 , March 2006 , pp. 183 - 188
Copyright
© EDP Sciences, 2006

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References

Li, J.C., Lopes, R., Vialle, C., Sacadura, J.F., J. Laser Appl. 11, 279 (1999) CrossRef
A. Delmas, J.C. Li, Sixteenth European Conference on Thermophysical Properties, 2002
Li, J.C., Vialle, C., Merlin, J., J. Opt. 24, 41 (1993)
Li, J.C., Merlin, J., Rev. Phys. Appl. 25, 1111 (1989)
J.W. Goodman, Introduction to Fourier Optics (McGraw Hill, New York, 1968)