Hostname: page-component-78c5997874-xbtfd Total loading time: 0 Render date: 2024-11-10T21:07:53.215Z Has data issue: false hasContentIssue false
  • English
  • Français

Intraband and interband absorption of femtosecond laser pulses in copper

Published online by Cambridge University Press:  30 August 2005

D. FISHER ,
M. FRAENKEL ,
Z. ZINAMON ,
Z. HENIS ,
E. MOSHE ,
Y. HOROVITZ ,
E. LUZON ,
S. MAMAN  and
S. ELIEZER
D. FISHER
Affiliation:
Department of Plasma Physics, Soreq NRC, Yavne, Israel Faculty of Physics, Weizmann Institute of Science, Rehovot, Israel
M. FRAENKEL
Affiliation:
Department of Plasma Physics, Soreq NRC, Yavne, Israel
Z. ZINAMON
Affiliation:
Faculty of Physics, Weizmann Institute of Science, Rehovot, Israel
Z. HENIS
Affiliation:
Department of Plasma Physics, Soreq NRC, Yavne, Israel
E. MOSHE
Affiliation:
Department of Plasma Physics, Soreq NRC, Yavne, Israel
Y. HOROVITZ
Affiliation:
Department of Plasma Physics, Soreq NRC, Yavne, Israel
E. LUZON
Affiliation:
Department of Plasma Physics, Soreq NRC, Yavne, Israel Racah Institute of Physics, The Hebrew University, Jerusalem, Israel
S. MAMAN
Affiliation:
Department of Plasma Physics, Soreq NRC, Yavne, Israel
S. ELIEZER
Affiliation:
Department of Plasma Physics, Soreq NRC, Yavne, Israel
Get access Rights & Permissions [Opens in a new window]

Abstract

We investigated the optical properties of pure copper irradiated by a femtosecond laser pulse. Self-absorption of 50-fs laser pulses at 800 nm and 400 nm wavelengths (below and above the interband absorption threshold, respectively) is studied for peak laser intensities up to 1015 W/cm2. Theoretical description of laser interaction with copper target is developed, solving numerically the energy balance equations for electron and ion subsystems together with Maxwell equations for laser radiation field inside the target. The theory accounts for both intraband and interband absorption mechanisms. We treated in detail the changes in electron structure and distribution function with an increase in electron temperature, as well as the ensuing changes in thermodynamic properties, collision frequencies, optical and transport coefficients. Experimental work on self-absorption of femtosecond laser pulses in copper targets at 800 nm and 400 nm wavelengths is ongoing. Results for 800 nm wavelength are reported. Theory and experiment are in good agreement.

Keywords

CopperCore state ionizationFemtosecondInterbandMetal plasma transition
Type
Research Article
Information
Laser and Particle Beams , Volume 23 , Issue 3 , September 2005 , pp. 391 - 393
Copyright
© 2005 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

Footnotes

This paper was presented at the 28th ECLIM conference in Rome, Italy.

References

REFERENCES

Eliezer, S. (2002). The Interaction of High-Power Lasers with Plasmas, Bristol: IoP Publishing.
Fisher, D., Fraenkel, M., Henis, Z., Moshe, E. & Eliezer S. (2001). Interband and intraband (Drude) contributions to femtosecond laser absorption in Aluminum. Phys. Rev. E 65, 016409.Google Scholar
Gavrilov, S.A., Golishnikov, D.M., Gordienko, V.M., Savel'ev, A.B. & Volkov, R.V. (2004). Efficient hard X-ray source using femtosecond plasma at solid targets with a modified surface. Laser Part. Beams 22, 301–306.Google Scholar
Liberman, D.A. (1979). Self-consistent field model for condensed matter. Phys. Rev. B 20, 4981–4989.Google Scholar
Liberman, D.A. (1982). INFERNO: A better model of atoms in dense plasmas. J Quant. Spectrosc. Radiat. Transfer 27, 335–339.Google Scholar
Limpouch, J., Renner, O., Krousky, E., Uschmann, I., Foerster, E., Kalashnikov, M.P. & Nickles P.V. (2002). Line X-ray emission from Al targets irradiated by high-intensity, variable-length laser pulses. Laser Part. Beams 20, 43–49.Google Scholar
Limpouch, J., Klimo, O., Bina, V. & Kawata, S.. (2004). Numerical studies on the ultrashort pulse K-alpha emission sources based on femtosecond laser-target interactions. Laser Part. Beams 22, 147–156.Google Scholar
Milchberg, H.M., Freeman, R.R., Davey, S.C. & More, R.M. (1988). Reflectivity of a simple metal from room temperature to 106 K. Phys Rev Lett 61, 2364–2367.Google Scholar
Price, D.F., More, R.M., Walling, R.S., Guethlein, G., Shepherd, R.L., Stewart, R.E. & White, W.E. (1995). Absorption of ultrashort laser pulses by solid targets heated rapidly to temperatures 1–1000 eV. Phys Rev Lett 75, 252–255.Google Scholar
Shokri, B., Niknam, A.R. & Krainov, V. (2004). Cluster structure effects on the interaction of an ultrashort intense laser field with large clusters. Laser Part. Beams 22, 13–18.Google Scholar
Shorokhov, O. & Pukhov, A. (2004). Ion acceleration in overdense plasma by short laser pulse. Laser Part. Beams 22, 175–181.Google Scholar