Title

Prediction of Crater Shape in Femtosecond Laser Ablation of Dielectrics

Abstract

This paper reports on a new model to investigate the femtosecond laser ablation of dielectrics by considering the time and space dependent optical properties of highly ionized dielectrics. A quantum treatment is employed to determine the free electron heating and the free electron relaxation time in the dense plasma. The proposed model greatly improves the prediction precision of ablation depth and can predict the crater shape of femtosecond laser ablation of dielectrics. The predicted ablation depths are in agreement with published experimental data for the example of barium aluminium borosilicate. Some interesting phenomena observed experimentally can be well explained by the proposed model.

Department(s)

Mechanical and Aerospace Engineering

Sponsor(s)

National Science Foundation (U.S.)

Keywords and Phrases

Electron Heating; Femtosecond Laser

Library of Congress Subject Headings

Dielectrics

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2004 Institute of Physics - IOP Publishing, All rights reserved.


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