Generation of shock waves in water and in air by CO2 laser radiation focused on the free surface of a liquid

Komissarova, I. I.; Ostrovskaya, G. V.; Филиппов, В. Н.; Shedova, E. N.

doi:10.1134/1.1258611

Cited by 5 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The LIB plasma and the consequences of its shielding effect influence all practical applications which involve the gasliquid interface; most common among them are different kinds of medical procedures, from laser surgery and other kinds of laser treatment [5,6] to laser material processing involving liquid layers for enhanced surface effects [7,8] and laser-based non-contact underwater communications [9]. Some of the studies that use one of the above-mentioned techniques also deal with the breakdown, the resulting plasma and the creation of the shock wave near the air-water interface [7][8][9][10][11]. However, to our knowledge there has not been a detailed measurement of the effects in the vicinity of the interface depending on the relative position of the interface and the focal point of the breakdown-generating laser beam.…”

Section: Laser-induced Breakdown (Lib) At the Air-water Interfacementioning

confidence: 99%

Optodynamic observation of double laser-induced breakdown at the water surface

Horvat¹,

Petkovšek²,

Možina³

2010

Meas. Sci. Technol.

View full text Add to dashboard Cite

A measurement technique based on the combination of beam deflection probe and photographic detection of optical emission is introduced for the study of laser-induced dielectric breakdown in the vicinity of the air-water interface. The plasma was photographed with a CCD camera and the shock wave generated by the breakdown in the air and inside the water was detected with a beam deflection probe as a function of the focus position. The comparative analysis of the photographic images and the characteristics of the simultaneously recorded ultrasonic signals shows that the amplitudes and the arrival times of the ultrasonic waves can reliably describe the characteristics of the breakdown and its position relative to the water surface. At certain focus positions the existence of double breakdown is evident.

show abstract