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10 June 1996 Interaction between impulse laser radiation and the dielectric media surface by holographic interferometry
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Proceedings Volume 2791, Photomechanics '95; (1996)
Event: Photomechanics '95, 1995, Novosibirsk, Russian Federation
An investigation was made of the dynamics of crater growth when a millisecond light pulse with a complicated temporal form interacted with the surface of a transparent dielectric. The characteristics of elastic waves generated in the course of this interaction were also studied. The effective growth of a crater consisted of two stages and lasted no more than 100 microseconds. In the first stage the area of the damage region increased while its depth remained practically constant, in the second stage the crater growth was three-dimensional. The generation of acoustic vibrations could be described satisfactorily by a model of loaded zone emitting waves into an elastic medium. The increasing use of laser processing of materials is responsible for the growing interest in the phenomena resulting from the interaction of high-power light pulses with the surface of a solid. The aim of our investigation was the dynamics of crater growth and of changes in the density of an inelastically deformed material and a study of generation of acoustic waves in the transparent insulator when its surface interacts with a millisecond laser pulse with a complex temporal profile.
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S. V. Vasilyev, A. Ya. Ivanov, and V. I. Nedolugov "Interaction between impulse laser radiation and the dielectric media surface by holographic interferometry", Proc. SPIE 2791, Photomechanics '95, (10 June 1996);

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