SPATIAL PROFILES OF HIGH-ORDER HARMONICS GENERATED BY A FEMTOSECOND CRLISAF LASER

Authors
SALIERES P DITMIRE T BUDIL KS PERRY MD LHUILLIER A
Citation
P. Salieres et al., SPATIAL PROFILES OF HIGH-ORDER HARMONICS GENERATED BY A FEMTOSECOND CRLISAF LASER, Journal of physics. B, Atomic molecular and optical physics, 27(9), 1994, pp. 120000217-120000222
Citations number
13
Categorie Soggetti
Physics, Atomic, Molecular & Chemical",Optics
Journal title
Journal of physics. B, Atomic molecular and optical physics → ACNP
ISSN journal
09534075
Volume
27
Issue
9
Year of publication
1994
Pages
120000217 - 120000222
Database
ISI
SICI code
0953-4075(1994)27:9<120000217:SPOHHG>2.0.ZU;2-N
Abstract
We report the angular distributions of high-order harmonic radiation g enerated in neon and in argon using a 140 fs Cr:LiSAF laser system. Th e profiles show an evolution from Gaussian to near flat-top. No substr ucture is observed except at the highest intensity in a completely ion ized gas. The divergence of the harmonics is found to depend essential ly on whether they belong to the plateau or to the cutoff. It is appro ximately constant in the plateau, of the order of 15 mrad and decrease s from 15 mrad to 6 mrad in the cutoff region.