28 August 2009 Relation research on laser-induced shockwave and laser pulse in laser shock processing
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Proceedings Volume 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging; 73820Z (2009) https://doi.org/10.1117/12.835001
Event: International Symposium on Photoelectronic Detection and Imaging 2009, 2009, Beijing, China
Abstract
When a short pulse of a Q-switched high-power laser hit surface of materials, laser energy would be absorbed rapidly, thus producing explosive vaporization, and almost at the same time a high-pressure shock wave was induced, called laser shock wave. This ultra-high pressure induced by high power laser had been applied in the fields of basic research and engineering application such as inertial confined fusion, laser shock processing, etc. Influence of variable laser power density on laser shock wave was studied in this paper. Influences of variation of laser wavelength and pulse duration on laser shock waves were also discussed in laser shock processing. Piezoelectric Polyvinylidene Fluoride (PVDF) transducer and TDS3052B Digital Oscilloscope were applied in our experiments to measure the piezoelectric wave of PVDF and the corresponding stress wave induced by laser in real time. Differences and relations between laser-induced shockwave and laser pulse in laser shock processing were researched according to the obtained waves, and the detailed analyses of their causes were given based on the formation of laser-induced shock wave. The research results could have important implications for a better understanding of characteristics of laser shock wave and further studies into the interaction between high-power laser and materials.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xia Ye, Xia Ye, Yongkang Zhang, Yongkang Zhang, Hongbing Yao, Hongbing Yao, Guilin Ding, Guilin Ding, Yanqun Tong, Yanqun Tong, Yongfeng Gao, Yongfeng Gao, Shuisheng Yu, Shuisheng Yu, Lu Ding, Lu Ding, } "Relation research on laser-induced shockwave and laser pulse in laser shock processing", Proc. SPIE 7382, International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, 73820Z (28 August 2009); doi: 10.1117/12.835001; https://doi.org/10.1117/12.835001
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