40th International Workshop on High Energy Density Physics with Intense Ion and Laser Beams

Silica is perspective material for component of powerful laser setups and new optical fibers. Damage of the light conductivity in the silica optical fiber transporting intense laser radiation leads to the absorption of energy and the appearance of a bright laser plasma with solid density. The plasma begins to move towards the radiation source, irreversibly damaging the light guide. Depending on driving laser energy, different damage propagation velocities are possible [1-4]. New scientific challenge is creation extremal states inside hollow optical fibers under laser action [5]. [1]. Dianov E.M., Fortov V.E., Bufetov I.A., Efremov V.P., Frolov A.A., Schelev M.Y. and Lozovoi V.I. Detonation-like mode of the destruction of optical fibers under intense laser radiation // J. Exp. Theo. Phys. Lett., 2006. – V. 83. – № 2. – Pp. 75 - 78. [2]. Efremov V.P., Frolov A.A., Dianov E.M., Bufetov I.A., Fortov V.E., Dynamics of laser-induced shock wave in silica Archives of Metallurgy and Materials, 2014. – V. 59. – № 4. - Pp. 1599 - 1603. [3]. Efremov V.P., Fortov V.E., Frolov A.A. Damage of silica-based optical fibers in laser-supported detonation // Journal of Physics: XXX International Conference on Interaction of Intense Energy Fluxes with Matter, 2015. - V. 653. – P. 012013. [4]. Efremov V.P., Utkin A.V. Destruction of Silica Fiber Materials under Shock Wave and Radiation Loadings // Advanced Materials and Technologies № 3, Pp. 17-21 (2018) [5]. A. Bufetov, A. N. Kolyadin, A. F. Kosolapov, V. P. Efremov, V. E. Fortov Catastrophic damage in hollow core optical fibers under high power laser radiation Optics Express 2019 Vol. 27, Issue 13, pp. 18296-18310 https://doi.org/10.1364/OE.27.018296