Roughening phase transition and surface local field increase under the action of powerful laser radiation on solids

Vladimir I. Emel'yanov; V. A. Fedotov

doi:10.1117/12.342364

15 March 1999 Roughening phase transition and surface local field increase under the action of powerful laser radiation on solids

Vladimir I. Emel'yanov, V. A. Fedotov

Author Affiliations +

Proceedings Volume 3734, ICONO '98: Fundamental Aspects of Laser-Matter Interaction and New Nonlinear Optical Materials and Physics of Low-Dimensional Structures; (1999) https://doi.org/10.1117/12.342364
Event: ICONO '98: Laser Spectroscopy and Optical Diagnostics: Novel Trends and Applications in Laser Chemistry, Biophysics, and Biomedicine, 1998, Moscow, Russian Federation

Abstract

It is shown that a high concentration of laser-induced point defects (interstitials, vacancies), interacting with each other through deformation field, phase transition with formation of nanometer periodic Defect-Deformational- structure occurs, accompanied by appearance of modulation of the surface relief. The shape, period and amplitude of relief modulation are determined as functions of defect concentration. It is shown that the local field factor at metal surface undergoes resonance increase (10² times) under scanning of the temperature in vicinity of roughening transition point lying just below the melting point.

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Vladimir I. Emel'yanov and V. A. Fedotov "Roughening phase transition and surface local field increase under the action of powerful laser radiation on solids", Proc. SPIE 3734, ICONO '98: Fundamental Aspects of Laser-Matter Interaction and New Nonlinear Optical Materials and Physics of Low-Dimensional Structures, (15 March 1999); https://doi.org/10.1117/12.342364

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