Abstract
Ultrashort pulse laser ablation of metallic targets is investigated theoretically through establishing a modified two-temperature model that takes into account both the temperature dependent electron–lattice coupling and the electron–electron-collision dominated electron diffusion processes for higher electron temperature regime. The electron–lattice energy coupling rate is found to reduce only slowly with increasing pulse duration, but grow rapidly with laser fluence, implying that the melting time of metallic materials decreases as the laser intensity increases. By taking phase explosion as the primary ablation mechanism, the predicted dependences of ablation rates on laser energy fluences for different laser pulse widths match very well with the experimental data. It is also found that during phase explosion the ablation rate is almost independent of the pulse width, whereas the ablation threshold fluence increases with the pulse duration even for femtosecond pulses. These theoretical results should be useful in having proper understanding of the ablation physics of ultrafast micromachining of metal targets.
Similar content being viewed by others
References
B.N. Chrichkov, C. Momma, S. Nolte, F. Alvensleben, A. Tunnermann, Appl. Phys. A 63, 109 (1996)
P.P. Pronko, S.K. Dutta, J. Squier, J.V. Rudd, D. Du, G. Mourou, Opt. Commun. 114, 106 (1995)
X. Zhu, A. Naumov, D. Villeneuve, P.B. Corkum, Appl. Phys. A 69, 367 (1999)
R. Le Harzic, D. Breitling, M. Weikert, S. Sommer, C. Fohl, S. Valette, C. Donnet, E. Audouard, F. Dausinger, Appl. Surf. Sci. 249, 322 (2005)
M.I. Kaganov, I.M. Lifshitz, M.V. Tanatarov, Sov. Phys. JETP 4, 173 (1957)
S.I. Anisimov, B.L. Kapeliovich, T.L. Perelman, Sov. Phys. JETP 39, 375 (1974)
P.B. Corkum, F. Brunel, N.K. Sherman, Phys. Rev. Lett. 61, 2886 (1998)
S. Nolte, C. Momma, H. Jacobs, A. Tunnermann, B.N. Chichkov, B. Wellegehausen, H. Welling, J. Opt. Soc. Am. B 14, 2716 (1997)
B. Rethfeld, A. Kaiser, M. Vicanek, G. Simon, Appl. Phys. A 69, S109 (1999)
J.G. Fujimoto, J.M. Liu, E.P. Ippen, Phys. Rev. Lett. 53, 1837 (1984)
T.Q. Qiu, C.L. Tien, J. Heat Transf. 115, 835 (1993)
J.K. Chen, J.E. Beraun, Numer. Heat Transf. A 40, 1 (2001)
A.P. Kanavin, I.V. Smetanin, V.A. Isakov, Y.V. Afanasiev, B.N. Chichkov, B. Wellegehausen, S. Nolte, C. Momma, A. Tünnermann, Phys. Rev. B 57, 14698 (1998)
J. Yang, W. Liu, X. Zhu, to be published in Chinese Phys. (2007)
S. Wellershoff, J. Hohlfeld, J. Gudde, E. Matthias, Appl. Phys. A 69, S99 (1999)
W.S. Fann, R. Storz, H.W.K. Tom, J. Bokor, Phys. Rev. Lett. 68, 2834 (1992)
X.Y. Wang, D.M. Riffe, Y.S. Lee, M.C. Downer, Phys. Rev. B 15, 8016 (1994)
P.B. Allen, Phys. Rev. Lett. 59, 1460 (1987)
J.K. Chen, W.P. Latham, J.E. Beraun, J. Laser Appl. 17, 63 (2005)
B. Rethfeld, K. Sokolowski-Tinten, D. Von Linde, S.I. Anisimov, Appl. Phys. A 79, 767 (2004)
J. Yang, Y. Zhao, X. Zhu, Appl. Phys. Lett. 88, 094101 (2006)
R. Kelly, A. Miotello, Phys. Rev. E 60, 2616 (1999)
N.M. Bulgakova, I.M. Bourakov, Appl. Surf. Sci. 197–198, 41 (2002)
K. Sokolowski-Tinten, J. Bialkowski, A. Cavalleri, D. von der Linde, A. Oparin, J. Meyer-ter-Vehn, S.I. Anisimov, Phys. Rev. Lett. 81, 224 (1998)
J.K. Chen, J.E. Beraun, J. Opt. A Pure Appl. Opt. 5, 168 (2003)
E. Leveugle, D.S. Ivanov, L.V. Zhigilei, Appl. Phys. A 79, 1643 (2004)
C. Schafer, H.M. Urbassek, L.V. Zhigilei, Phys. Rev. B 66, 115404-1 (2002)
H.E. Elsayed-Ali, T.B. Norris, M.A. Pessot, G.A. Mourou, Phys. Rev. Lett. 58, 1212 (1987)
B. Rethfeld, V.V. Temnov, K.S. Tinten, P. Tsu, D. von der Linde, S.I. Anisimov, S.I. Ashitkov, M.B. Agranat, J. Opt. Technol. 71, 348 (2004)
S.I. Ashitkov, M.B. Agranat, P.S. Kondratenko, S.I. Anisimov, V.E. Fortov, V.V. Temnov, K.S. Tinten, B. Rethfeld, P. Zhou, D. von der Linde, JETP Lett. 76, 461 (2002)
Y.G. Yingling, P.F. Conforti, B.J. Garrison, Appl. Phys. A 79, 757 (2004)
Author information
Authors and Affiliations
Corresponding author
Additional information
PACS
52.50.Jm; 61.80.Az; 72.15.Cz; 79.20.Ap; 79.20.Ds
Rights and permissions
About this article
Cite this article
Yang, J., Zhao, Y. & Zhu, X. Theoretical studies of ultrafast ablation of metal targets dominated by phase explosion. Appl. Phys. A 89, 571–578 (2007). https://doi.org/10.1007/s00339-007-4141-3
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00339-007-4141-3