Optics and Photonics Society of Iran

If a laser pulse focus into a liquid, energy absorption in focal point lead to bubble generation at this point. This paper introduces three models to characterize this way of bubble generation. In these models used the Gilmore bubble dynamics equation and this assumption that time dependence of laser pulse power is proportional to square of sinus function. Then calculated results from these models for the first steps of bubble radius evolutions for the case of focusing a 6ns-10mJ laser pulse into the water compared together and with laboratory results. In these comparisons realized that the model which amused the equilibrium radius evolutions rate is zero lead to better results for expansion of bubble which produced by laser pulse and water interaction.