Evolution of rough dielectric surface in high-power laser field

Vitali E. Gruzdev; Anastasia S. Gruzdeva; Mikhail N. Libenson

doi:10.1117/12.321521

14 September 1998 Evolution of rough dielectric surface in high-power laser field

Vitali E. Gruzdev, Anastasia S. Gruzdeva, Mikhail N. Libenson

Proceedings Volume 3343, High-Power Laser Ablation; (1998) https://doi.org/10.1117/12.321521
Event: High-Power Laser Ablation, 1998, Santa Fe, NM, United States

Abstract

This paper is devoted to investigation of some aspects of laser-driven evolution dielectric surface under action of high-power laser radiation. Main problems to be considered are (1) electrodynamic processes at the surface initiating laser- induced variations of surface relief; (2) possible mechanisms of formation of feedbacks between scattering and heating; (3) possible waveguide mechanisms of formation of surface ripple patterns. In the first case we investigate initiating of laser-induced deformation of dielectric surface through light scattering by both single relief defects and periodic relief modulation. Our goal is to study possibility of formation of local maximums of light intensity resulting in local heating of the surface. To consider the third problem we investigate positive feedbacks accompanying laser-surface interaction through mutual influence of electrodynamic and thermal processes. Obtained results show how the mentioned processes and feedbacks can influence laser-induced surface modification. Computer modeling is widely used to investigate all the mentioned problems. The presented results are discussed from the viewpoint of laser ablation and surface laser-induced damage of transparent optical materials.

Citation Download Citation

Vitali E. Gruzdev, Anastasia S. Gruzdeva, and Mikhail N. Libenson "Evolution of rough dielectric surface in high-power laser field", Proc. SPIE 3343, High-Power Laser Ablation, (14 September 1998); https://doi.org/10.1117/12.321521

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