Photoacoustic detection of microcracks induced in BK7 glass by focused laser pulses

被引：11

作者：

Navarrete, M

Villagrán-Muniz, M

Ponce, L

Flores, T

机构：

[1] Univ Nacl Autonoma Mexico, Inst Ingn, Edificio 12, Secc Ing Mecan Term & Fluidos, Mexico City 04510, DF, Mexico

[2] Univ Nacl Autonoma Mexico, Ctr Instrumentos, Unidad Fotofis, Mexico City 04510, DF, Mexico

[3] Inst Politecn Nacl, CICATA, Altamira 89600, Tamaulipas, Mexico

[4] Univ La Habana, IMRE, CP-10400 Havana 4, Cuba

来源：

OPTICS AND LASERS IN ENGINEERING | 2003年 / 40卷 / 1-2期

关键词：

laser photodisruption; laser-induced damage (LID); photoacoustic technique;

D O I：

10.1016/S0143-8166(02)00066-0

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An experimental investigation on the induced damage by accumulative pulses generated by. a Nd:YAG laser beam focused into the bulk of the BK7 glass is reported in this work. The laser was operated at the single-pulse damage energy threshold of the sample. The optical detonation generates a shock wave emission and. microcrack formation. The induced photoacoustic wave emerging from the-sample was monitored by piezoelectric detection. These signals provide a simple, reliable and highly sensitive indication of damage, processes involved, and the most appropriate laser parameters for two- and three-dimensional engraving. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：5 / 11

页数：7

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