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Applied Physics Letters / Volume 99 / Issue 23 / INTERDISCIPLINARY AND GENERAL PHYSICS

Appl. Phys. Lett. 99, 234104 (2011); http://dx.doi.org/10.1063/1.3665631 (3 pages)

Effect of air breakdown with a focusing lens on ultrashort laser ablation

Wenqian Hu, Yung C. Shin, and Galen King

School of Mechanical Engineering, Purdue University, West Lafayette, Indiana 47907, USA

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(Received 19 August 2011; accepted 14 November 2011; published online 6 December 2011)

The effect of air breakdown on ultrashort laser ablation is investigated in this letter using an integrated simulation method on atomistic level. The generation of air breakdown with different laser peak power densities in the range from 1013 to 1016 W/cm2 and various focusing conditions is analyzed. Air breakdown is generated directly from laser energy absorption through avalanche ionization at a high power density (over 1014 W/cm2), while at a lower power density, air breakdown is assisted by a metal target near the focal region. The laser energy loss due to air breakdown and its effect on laser ablation are studied.

© 2011 American Institute of Physics

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KEYWORDS and PACS

Keywords

air, electric breakdown, laser ablation, plasma light propagation, plasma simulation

PACS

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3665631

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    W. Hu, Y. C. Shin, and G. King, Phys. Rev. B 82, 094111 (2010).

    P. Lorazo, L. J. Lewis, and M. Meunier, Phys. Rev. Lett. 91, 225502 (2003).

    F. Théberge, W. Liu, P. Tr. Simard, A. Becker, and S. L. Chin, Phys. Rev. E 74, 036406 (2006).

    W. Hu, Y. C. Shin, and G. King, Phys. Plasmas 18, 093302 (2011)PHPAEN000018000009093302000001.

    P. P. Kiran, S. Bagchi, S. R. Krishnan, C. L. Arnold, G. R. Kumar, and A. Couairon, Phys. Rev. A 82, 013805 (2010).


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