Plume attenuation of laser radiation during high power fiber laser welding

被引：72

作者：

Shcheglov, P. Yu. ^{[1
,2
]}

Uspenskiy, S. A. ^{[2
,3
]}

Gumenyuk, A. V. ^{[1
]}

Petrovskiy, V. N. ^{[2
]}

Rethmeier, M. ^{[1
]}

Yermachenko, V. M. ^{[2
]}

机构：

[1] BAM Fed Inst Mat Res & Testing, D-12205 Berlin, Germany

[2] Natl Res Nucl Univ MEPhI, Moscow 115409, Russia

[3] IRE Polus Co, Fryazino 141190, Moscow Region, Russia

来源：

LASER PHYSICS LETTERS | 2011年 / 8卷 / 06期

基金：

俄罗斯基础研究基金会;

关键词：

laser welding; plume; beam attenuation; particles; OUTPUT POWER; ABLATION; OSCILLATIONS; EMISSION; ALUMINUM; KEYHOLE;

D O I：

10.1002/lapl.201110010

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The results of an in-situ plume-laser interaction measurement during welding of mild steel with a 5 kW ytterbium fiber laser are reported. A measurement of the attenuation of probe laser beam passing through the plume has allowed to estimate the plume characteristics like the size of the extinction area and the spatial distribution of the extinction coefficient. The power loss of the fiber laser radiation propagating through the whole plume length was calculated. Together with a measured temporal characteristics of extinction the result indicates a significant decreasing of the laser radiation stability, which can lead to the formation of the macroscopic welding defects.

引用

页码：475 / 480

页数：6

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