Shock-wave processes evolution in fused quartz under intense energy action

31st International Conference on Equations of State for Matter

Efremov, V.P.^1 ; Ivanov, M.F.^1 ; Kiverin, A.D.^1 ; Yakovenko, I.S.^1

Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya 13 Bldg 2, Moscow

125412, Russia^1

关键词: Conventional approach;    Dynamical process;    Equation of state;    Laser energy deposition;    Numerical techniques;    Optical silica;    Shock-wave process;    Silica optical fibers;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012119/pdf
DOI  :  10.1088/1742-6596/774/1/012119

来源: IOP

【 摘 要 】

The paper considers gas-dynamical processes evolving as a result of laser action in fused quartz. A conventional approach is used to construct a model for equation of state which provides an adequate description of the silica state at high densities of energy typical for local optical silica damage. Shock-wave processes generated in the medium due to the local laser energy deposition are calculated using fully conservative numerical technique. The obtained results provide relatively accurate description of the process in a wide range of parameters and allow further research to get clear interpretation of high-speed propagation of the laser absorbing front through the silica optical fiber.