Characteristics of laser-induced acoustic wave at different laser focusing position

ZONG Si-guang; WANG Jiang-an; JIANG Xing-zhou; WANG Yu-hong

Because of the interaction between the laser and water,the laser-induced signal is much different at different focusing position.In order to study the effect of focusing position on the acoustic wave,a setup was built to test the laser-induced acoustic wave.Experimental results show that the pulse width of the acoustic wave is related to that of laser pulse,and isindependent of laser focusing position.The focusing position only affects the time-domain profile and intensity of the acoustic wave.Furthermore,laser-induced plasma in air should be avoided.The results are helpful for further study on laser-induced acoustic wave.

Corresponding author: JIANG Xing-zhou, gdyfzx@163.com;

1. Department of Engineering, Naval University of Engineering, Wuhan 430033, China;

2. Department of Weaponry Engineering, Naval University of Engineering, Wuhan 430033, China

Received Date: 2008-04-23

Accepted Date: 2008-06-06

Available Online: 2009-06-25

Abstract: Because of the interaction between the laser and water,the laser-induced signal is much different at different focusing position.In order to study the effect of focusing position on the acoustic wave,a setup was built to test the laser-induced acoustic wave.Experimental results show that the pulse width of the acoustic wave is related to that of laser pulse,and isindependent of laser focusing position.The focusing position only affects the time-domain profile and intensity of the acoustic wave.Furthermore,laser-induced plasma in air should be avoided.The results are helpful for further study on laser-induced acoustic wave.

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Reference (9)

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Characteristics of laser-induced acoustic wave at different laser focusing position

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References

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