Abstract
Investigation of physical processes induced under powerful laser radiation interacting with surface of metal requires attention both in fundamental and practical aspects. In fact, the laser excitation of hydrodynamic instabilities, stochastic processes, and generation of different types of surface waves arising in such experiments are very important to understanding the mechanisms of the energy transport during the melting processes. The essential deviations from equilibrium state of the system are a vital point for discussion of highly nonlinear processes. These deviations cause qualitatively new forms of behavior of physical systems in comparison with the systems which could be described within the frameworks of common (weakly nonlinear) linearized dynamic models. It is of concern to the most general' and fundamental nonlinear problem that an excitation of stochastic and turbulent movement in dissipative systems and as a result the definite spatial and temporal structures (often with contrast to fluctuations) arise in considered nonlinear material.
© 1996 Optical Society of America
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