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Calculation of History of Ablation Depth of Al Target Irradiated by Intense Pulsed Laser Using Evaporation-condensation Theory

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2010年02期
Page:
252-256
Research Field:
Publishing date:

Info

Title:
Calculation of History of Ablation Depth of Al Target Irradiated by Intense Pulsed Laser Using Evaporation-condensation Theory
Author(s):
WANG Guang-anZHANG Yu-zhuLU JianNI Xiao-wu
School of Sciences,NUST,Nanjing 210094,China
Keywords:
intense pulsed laser ablation evaporation-condensation method pulse duration history of ablation depth
PACS:
TN249
DOI:
-
Abstract:
In order to avoid the complicated physical problems involved in the intense pulsed laser ablation,a method for calculating the depth history of laser ablation using the disciplines of evaporation and condensation is presented.With the histories of pressure and temperature of the vapor at the target surface,the formulas for calculating the history of ablation depth are given.The history of ablation depth at the spot center irradiated by the laser pulse at 1.06 μm with pulse duration of 20 ns and peak intensity of 500 MW/cm2 is calculated.The calculation result is highly consistent with the results in literature.The longer the laser pulse is,the more validity the result has.

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Last Update: 2010-04-30