Experimental characterization of shock wave driven by high power nanosecond pulsed laser in water

M. H. Mahdieh; M. Nikbakht; S. Yazdani

doi:10.1117/12.879617

16 November 2010 Experimental characterization of shock wave driven by high power nanosecond pulsed laser in water

M. H. Mahdieh, M. Nikbakht, S. Yazdani

Proceedings Volume 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; 77511R (2010) https://doi.org/10.1117/12.879617
Event: 18th International Symposium on Gas Flow and Chemical Lasers and High Power Lasers, 2010, Sofia, Bulgaria

Abstract

In this paper shock waves produced by nanosecond pulsed laser were characterized. The shock wave produced by focusing Q-switched Nd:YAG pulsed laser beam (with energy ~120 mJ, wavelength of λ=532 nm, and pulse duration of 10 ns) in ambient water. Using probe beam deflection technique, the shock velocity was measured around the breakdown region. The results show that the shock wave velocity near the breakdown region is at order of 7000 m/s, and slows down to ~1600m/s at further distances. Using the empirical relations the maximum shock pressure was also calculated. The results show that the shock pressure near the breakdown region is 2×10¹⁰ pa, and decreases with increasing distance from the center of the breakdown.

Citation Download Citation

M. H. Mahdieh, M. Nikbakht, and S. Yazdani "Experimental characterization of shock wave driven by high power nanosecond pulsed laser in water", Proc. SPIE 7751, XVIII International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 77511R (16 November 2010); https://doi.org/10.1117/12.879617

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