Femtosecond Laser Interaction with Metallic Tungsten and Nonequilibrium Electron and Lattice Temperatures
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.
- Publication:
-
Physical Review Letters
- Pub Date:
- November 1984
- DOI:
- 10.1103/PhysRevLett.53.1837
- Bibcode:
- 1984PhRvL..53.1837F
- Keywords:
-
- Electron Energy;
- Electron Phonon Interactions;
- Laser Target Interactions;
- Metal Surfaces;
- Photoelectric Emission;
- Tungsten;
- Ultrashort Pulsed Lasers;
- Lattice Parameters;
- Nonequilibrium Thermodynamics;
- Solid-State Physics;
- 79.20.Ds;
- 72.15.Lh;
- 79.60.Cn;
- Laser-beam impact phenomena;
- Relaxation times and mean free paths