Share Email Print
cover

Proceedings Paper

Modeling of electron density produced by femtosecond laser on metallic photocathodes
Author(s): Jean-Pierre Girardeau-Montaut; Claire Girardeau-Montaut
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

Analysis is made of the relative contributions of the main electronic emission processes (like thermoionic, multiphoton, and field effects), to the production of very high electron density by an ultrashort (fs range), visible or IR, laser pulse on a metallic photocathode. At such a duration, temporal variations of electrons and lattice temperatures have to be considered separately. They can be calculated with Anisimov's coupled equations, assuming from local thermal equilibrium of electron and photon gas respectively, but this condition is far from being satisfied. The authors establish a relationship between the extracted electronic charge, the incident laser fluence, and the laser pulse duration proving that ultrashort laser pulses are more efficient for the production of a very high photocurrent density with no surface damage.

Paper Details

Date Published: 1 October 1991
PDF: 5 pages
Proc. SPIE 1502, Industrial and Scientific Uses of High-Power Lasers, (1 October 1991); doi: 10.1117/12.46906
Show Author Affiliations
Jean-Pierre Girardeau-Montaut, Univ. Claude Bernard-Lyon I (France)
Claire Girardeau-Montaut, Univ. Claude Bernard-Lyon I (France)


Published in SPIE Proceedings Vol. 1502:
Industrial and Scientific Uses of High-Power Lasers
Jean Pierre Billon; Edouard Fabre, Editor(s)

© SPIE. Terms of Use
Back to Top