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Title: The Laser Damage Threshold for Materials and the Relation Between Solid-Melt and Melt-Vapor Interface Velocities

Abstract

Numerous experiments have demonstrated and analytic theories have predicted that there is a threshold for pulsed laser ablation of a wide range of materials. Optical surface damage threshold is a very complex and important application of high-power lasers. Optical damage may also be considered to be the initial phase of laser ablation. In this work it was determined the time required and the threshold energy of a layer of thickness to heat up. We used the Finite Difference method to simulate the process of laser-target interaction in three cases. Namely, the case before melting begins using a continuous wave (c.w) laser source and a pulsed laser source, the case after the first change of state (from solid to melt), and the case after the second change of state (from melt to vapor). And also study the relation between the solid-melt and melt-vapor interface velocities to have a commonsense of the laser ablation process.

Authors:
 [1]
  1. Egyptian Armed Forces, Cairo (Egypt)
Publication Date:
OSTI Identifier:
21436016
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1278; Journal Issue: 1; Conference: International symposium on high power laser ablation 2010, Santa Fe, NM (United States), 18-22 Apr 2010; Other Information: DOI: 10.1063/1.3507152; (c) 2010 American Institute of Physics; Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ABLATION; ABSORPTION; COMPUTERIZED SIMULATION; DAMAGE; FINITE DIFFERENCE METHOD; INTERFACES; LASER RADIATION; LASER TARGETS; LAYERS; MELTING; PULSED IRRADIATION; SOLIDS; SURFACES; THERMAL CONDUCTIVITY; THRESHOLD ENERGY; VAPORS; VISIBLE RADIATION; CALCULATION METHODS; ELECTROMAGNETIC RADIATION; ENERGY; FLUIDS; GASES; IRRADIATION; ITERATIVE METHODS; MATHEMATICAL SOLUTIONS; NUMERICAL SOLUTION; PHASE TRANSFORMATIONS; PHYSICAL PROPERTIES; RADIATIONS; SIMULATION; SORPTION; TARGETS; THERMODYNAMIC PROPERTIES

Citation Formats

Khalil, Osama Mostafa. The Laser Damage Threshold for Materials and the Relation Between Solid-Melt and Melt-Vapor Interface Velocities. United States: N. p., 2010. Web. doi:10.1063/1.3507152.
Khalil, Osama Mostafa. The Laser Damage Threshold for Materials and the Relation Between Solid-Melt and Melt-Vapor Interface Velocities. United States. https://doi.org/10.1063/1.3507152
Khalil, Osama Mostafa. Fri . "The Laser Damage Threshold for Materials and the Relation Between Solid-Melt and Melt-Vapor Interface Velocities". United States. https://doi.org/10.1063/1.3507152.
@article{osti_21436016,
title = {The Laser Damage Threshold for Materials and the Relation Between Solid-Melt and Melt-Vapor Interface Velocities},
author = {Khalil, Osama Mostafa},
abstractNote = {Numerous experiments have demonstrated and analytic theories have predicted that there is a threshold for pulsed laser ablation of a wide range of materials. Optical surface damage threshold is a very complex and important application of high-power lasers. Optical damage may also be considered to be the initial phase of laser ablation. In this work it was determined the time required and the threshold energy of a layer of thickness to heat up. We used the Finite Difference method to simulate the process of laser-target interaction in three cases. Namely, the case before melting begins using a continuous wave (c.w) laser source and a pulsed laser source, the case after the first change of state (from solid to melt), and the case after the second change of state (from melt to vapor). And also study the relation between the solid-melt and melt-vapor interface velocities to have a commonsense of the laser ablation process.},
doi = {10.1063/1.3507152},
url = {https://www.osti.gov/biblio/21436016}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1278,
place = {United States},
year = {2010},
month = {10}
}