Relation research on laser-induced shockwave and laser pulse in laser shock processing

Xia Ye; Yongkang Zhang; Hongbing Yao; Guilin Ding; Yanqun Tong; Yongfeng Gao; Shuisheng Yu; Lu Ding

doi:10.1117/12.835001

28 August 2009 Relation research on laser-induced shockwave and laser pulse in laser shock processing

Xia Ye, Yongkang Zhang, Hongbing Yao, Guilin Ding, Yanqun Tong, Yongfeng Gao, Shuisheng Yu, Lu Ding

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.

Citation Download Citation

Xia Ye, Yongkang Zhang, Hongbing Yao, Guilin Ding, Yanqun Tong, Yongfeng Gao, Shuisheng Yu, and 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); https://doi.org/10.1117/12.835001

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KEYWORDS

Pulsed laser operation

Laser processing

Ferroelectric polymers

High power lasers

Laser energy

Transducers

Oscilloscopes

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