FEMTOSECOND LASER-INDUCED ELECTRON-EMISSION FROM FERROELECTRICS

Authors
GEISSLER K MEINEKE A RIEGE H DESILVESTRI S NISOLI M SVELTO O BOSCOLO I HANDEREK J
Citation
K. Geissler et al., FEMTOSECOND LASER-INDUCED ELECTRON-EMISSION FROM FERROELECTRICS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 372(3), 1996, pp. 567-571
Citations number
12
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
372
Issue
3
Year of publication
1996
Pages
567 - 571
Database
ISI
SICI code
0168-9002(1996)372:3<567:FLEFF>2.0.ZU;2-Y
Abstract
The efficiency of laser-induced electron emission from ferroelectric ( FE) cathodes has been measured by illumination with a Ti:sapphire lase r at a pulse length of 140 fs and is compared to earlier measurements at 40 ps and 5 ns pulse lengths, Two modes of emission are observed: ( i) a ''normal steady-state'' emission in the presence of a constant ex traction field and (ii) a transient mode after a polarization switchin g of the FE cathode by a high-voltage pulse. The latter mode leads to ''self-emission'' of high electron currents with kinetic electron ener gies of several kilovolts. The physical interpretation and the potenti al applications of laser-induced electron emission from FE cathodes ar e briefly pointed out.