Polarization effects in ultrashort-pulse laser drilling

被引：0

作者：

S. Nolte

C. Momma

G. Kamlage

A. Ostendorf

C. Fallnich

F. von Alvensleben

H. Welling

机构：

[1] Laser Zentrum Hannover e.V.,

[2] Hollerithallee 8,undefined

[3] 30419 Hannover,undefined

[4] Germany (Fax: +49-511/2788-100,undefined

[5] E-mail: sn@lzh.de),undefined

来源：

Applied Physics A | 1999年 / 68卷

关键词：

PACS: 79.20.D; 42.62.C;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A strong influence of the polarization of the laser radiation on the geometry of laser-machined microdrillings has been observed for ultrashort pulses. For drillings with a certain aspect ratio, reflections at the hole walls take place, leading to a non-uniform intensity distribution deep inside the formed hole. Experimental and theoretical results on this subject are discussed. It is shown that a rotation of the polarization during the drilling process (“polarization trepanning”) significantly improves the quality of the produced holes.

引用

页码：563 / 567

页数：4