Electron-phonon equilibration in laser-heated gold films

Electron-phonon equilibration in laser-heated gold films

By irradiating a thin metal foil with an intense short-pulse laser, we have created a uniform system far from equilibrium. The deposited energy is initially deposited only within the electronic subsystem, and the subsequent evolution of the system is determined by the details of the electron-phonon...

Full description

Bibliographic Details
Main Authors: White, T, Mabey, P, Gericke, DO, Hartley, N, Doyle, H, McGonegle, D, Rackstraw, D, Higginbotham, A, Gregori, G
Format: Journal article
Language:English
Published: American Physical Society 2014
Description
Summary:By irradiating a thin metal foil with an intense short-pulse laser, we have created a uniform system far from equilibrium. The deposited energy is initially deposited only within the electronic subsystem, and the subsequent evolution of the system is determined by the details of the electron-phonon coupling. Here, we measure the time evolution of the lattice parameter through multilayer Bragg diffraction and compare the result to classical molecular dynamic simulations to determine the lattice temperature. The electron-ion coupling constant for gold is then determined by comparison with the evolution of a two-temperature electron-phonon system. © 2014 American Physical Society.

Similar Items