Femtosecond Laser Interaction with Metallic Tungsten and Nonequilibrium Electron and Lattice Temperatures

J. G. Fujimoto; J. M. Liu; E. P. Ippen; N. Bloembergen

doi:10.1103/PhysRevLett.53.1837

Femtosecond Laser Interaction with Metallic Tungsten and Nonequilibrium Electron and Lattice Temperatures

J. G. Fujimoto, J. M. Liu, E. P. Ippen, and N. Bloembergen

Phys. Rev. Lett. 53, 1837 – Published 5 November 1984

Abstract

High-intensity, 75-fs optical pulses have been applied to observe multiphoton and thermally enhanced photoemission from a tungsten metal surface. Experimental results suggest the presence of anomalous heating, a transient nonequilibrium temperature difference between the electrons and lattice. Pump-probe measurements indicate an electron-phonon energy relaxation time of several hundred femtoseconds.

Received 16 April 1984

DOI:https://doi.org/10.1103/PhysRevLett.53.1837

Authors & Affiliations

J. G. Fujimoto, J. M. Liu^*, and E. P. Ippen

Department of Electrical Engineering and Computer Science and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139

N. Bloembergen