The Influence of High-Frequency Phase of Laser Wavefront on the Distribution of Focal Spot

Fu Xing Fu

doi:10.4028/www.scientific.net/AMM.644-650.1433

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 644-650The Influence of High-Frequency Phase of Laser...

The Influence of High-Frequency Phase of Laser Wavefront on the Distribution of Focal Spot

Abstract:

When laser beam is effected on the material, the surface properties of material can be damaged, and the damage effect is different for the different laser beams. Nevertheless, the distribution of laser intensity is influenced by the proportion of high-frequency phase in wavefront. By researching the propagation character of wavefront phase, the relation of high-frequency phase and laser intensity is given in this paper. The results show that the focal spot increases gradually with the increase of the proportion of high-frequency phase, the peak value of intensity decreases obviously, and the number of side lobe increases observably.

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Periodical:

Applied Mechanics and Materials (Volumes 644-650)

Pages:

1433-1437

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.644-650.1433

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Online since:

September 2014

Authors:

Fu Xing Fu*

Keywords:

Energy Density, Focal Spot, High-Frequency Phase, Laser Beam

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