Analysis of optodynamic sources generated during laser-induced breakdown in water

被引：5
作者：
Petkovsek, Rok
Horvat, Darja
Mocnik, Grisa
Terzic, Mira
Mozina, Janez
机构：
[1] Univ Ljubljana, Fac Mech Engn, SL-1000 Ljubljana, Slovenia
[2] Optodek Doo, SL-1000 Ljubljana, Slovenia
[3] Univ Novi Sad, Fac Sci, SCG-21000 Novi Sad, Serbia
来源：
ULTRASONICS | 2006年 / 44卷
关键词：
optodynamic; laser-induced breakdown; ultrasonic waveform;
D O I：
10.1016/j.ultras.2006.05.078
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
We propose a method for evaluating the size of the laser- induced breakdown region in water based on the detection and analysis of optodynamic waves. The breakdown region is an optodynamic source of pressure waves that propagate into the surrounding liquid as an ultrasonic pulse. In the experiment the optical breakdown was generated by a standard ophthalmic Nd: YAG laser with a pulse duration of 10 ns and a maximum energy per pulse of 10 mJ. The pulses were detected inside the liquid with a laser- beam deflection probe. The waveforms were captured in the far-field and analyzed. The analysis provides information about the apparent size of the optodynamic source, which is directly related to the size of the breakdown region. The proposed method can be adapted for online monitoring. (c) 2006 Elsevier B. V. All rights reserved.
引用
收藏
页码：E1255 / E1258
页数：4
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