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Intraband and interband absorption of femtosecond laser pulses in copper

  • D. FISHER (a1) (a2), M. FRAENKEL (a1), Z. ZINAMON (a2), Z. HENIS (a1), E. MOSHE (a1), Y. HOROVITZ (a1), E. LUZON (a1) (a3), S. MAMAN (a1) and S. ELIEZER (a1)...


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.


Corresponding author

Address correspondence and reprint requests to: D. Fisher, Department of Plasma Physics, Soreq NRC, Yavne 81800, Israel. E-mail:


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



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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.
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, 301306.
Liberman, D.A. (1979). Self-consistent field model for condensed matter. Phys. Rev. B 20, 49814989.
Liberman, D.A. (1982). INFERNO: A better model of atoms in dense plasmas. J Quant. Spectrosc. Radiat. Transfer 27, 335339.
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, 4349.
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, 147156.
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, 23642367.
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, 252255.
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, 1318.
Shorokhov, O. & Pukhov, A. (2004). Ion acceleration in overdense plasma by short laser pulse. Laser Part. Beams 22, 175181.


Intraband and interband absorption of femtosecond laser pulses in copper

  • D. FISHER (a1) (a2), M. FRAENKEL (a1), Z. ZINAMON (a2), Z. HENIS (a1), E. MOSHE (a1), Y. HOROVITZ (a1), E. LUZON (a1) (a3), S. MAMAN (a1) and S. ELIEZER (a1)...


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