Laser shock processing with 20 MW laser pulses delivered by optical fibers

被引：34

作者：

Schmidt-Uhlig, T

Karlitschek, P

Yoda, M

Sano, Y

Marowsky, G

机构：

[1] Laser Lab Gottingen eV, D-37077 Gottingen, Germany

[2] Toshiba Corp, Nucl Engn Lab, Isogo Ku, Yokohama, Kanagawa 2358523, Japan

来源：

EUROPEAN PHYSICAL JOURNAL-APPLIED PHYSICS | 2000年 / 9卷 / 03期

关键词：

D O I：

10.1051/epjap:2000109

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A large-core multi mode optical fiber is used to deliver 100 mJ, 5 ns laser pulses produced by a frequency-doubled Nd:YAG laser over a distance of several meters. No damage is observed neither inside the fiber nor at its surface. The transmitted pulses are focused to a diameter of 700 mu m onto a water-immersed type 304 stainless steel sample for laser shock processing. With a pulse density of 10000 pulses/cm(2) a compressive residual surface stress is achieved. The affected depth is almost 900 mu m, the maximum compressive stress -700 MPa.

引用

页码：235 / 238

页数：4

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