OBSERVATION OF VUV RADIATION AT WAVELENGTHS IN THE OMEGA(P)-WAVELENGTH AND 2-OMEGA(P)-WAVELENGTH RANGE EMITTED FROM FEMTOSECOND LASER-PLASMAS

Authors
TEUBNER U ALTENBERND D GIBBON P FORSTER E MYSYROWICZ A AUDEBERT P GEINDRE JP GAUTHIER JC LICHTERS R MEYERTERVEHN J
Citation
U. Teubner et al., OBSERVATION OF VUV RADIATION AT WAVELENGTHS IN THE OMEGA(P)-WAVELENGTH AND 2-OMEGA(P)-WAVELENGTH RANGE EMITTED FROM FEMTOSECOND LASER-PLASMAS, Optics communications, 144(4-6), 1997, pp. 217-221
Citations number
25
Journal title
Optics communications → ACNP
ISSN journal
00304018
Volume
144
Issue
4-6
Year of publication
1997
Pages
217 - 221
Database
ISI
SICI code
0030-4018(1997)144:4-6<217:OOVRAW>2.0.ZU;2-3
Abstract
Electromagnetic emission close to multiples of the plasma frequency om ega(p) has been observed experimentally from short-pulse laser-irradia ted solid targets. Such radiation may be generated by a two-step proce ss in which hot electron jets excite Langmuir waves in the overdense r egion, which then undergo parametric conversion to electromagnetic emi ssion at harmonics of the plasma frequency omega(p). The observations are supported by particle-in-cell simulations, suggesting that this ra diation may be exploited as a density diagnostic. (C) 1997 Elsevier Sc ience B.V.