Wavelength dependence of the mechanisms governing the formation of nanosecond laser-induced damage in fused silica

被引：29
作者：
Chambonneau, Maxime [1 ]
Rullier, Jean-Luc [1 ]
Grua, Pierre [1 ]
Lamaignere, Laurent [1 ]
机构：
[1] CEA, CESTA, F-33116 Le Barp, France
来源：
OPTICS EXPRESS | 2018年 / 26卷 / 17期
关键词：
EXIT SURFACE; BULK; MORPHOLOGY; PICOSECOND; BREAKDOWN; ONSET; FILM;
D O I：
10.1364/OE.26.021819
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The influence of the wavelength on the morphology of nanosecond laser-induced damage on the exit surface of fused silica is investigated. A combination between the typical features of damage sites initiated at 1064 nm and 355 mu is observed at 532 nm, including ring patterns sporadically exhibited, in good agreement with calculations of the development of an electron avalanche at this wavelength. The associated ring appearance speed scales as the cube root of the laser intensity, and is similar to 10.5 km/s while it is similar to 20 km/s when initiated by infrared pulses. The whole set of results sheds light on the different wavelength-dependent mechanisms governing damage formation. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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收藏
页码：21819 / 21830
页数：12
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