Determination of the Most Important Parameters of a Metal Irradiated by an Ultrashort Laser Pulse
Abstract
Ultrashort laser pulses with a duration from several to about a thousand optical cycles have significant importance in modern science and engineering. Such a pulse transfers a metal to an excited two-temperature state with hot electrons where the temperature of the electron subsystem Te is much higher than the temperature of the ion subsystem Ti. The thermal conductivity in such systems differs from well-known reference values. The thermal conductivity κ and the energy exchange rate between the electron and ion subsystems α are the key parameters of the two-temperature model, which are still poorly studied, although studies of these parameters, particularly α, are numerous. New theoretical and experimental results that make it possible to determine the parameters κ and α for gold have been reported in this work.
- Publication:
-
Soviet Journal of Experimental and Theoretical Physics Letters
- Pub Date:
- January 2023
- DOI:
- 10.1134/S0021364022603050
- Bibcode:
- 2023JETPL.117..104I