High-order harmonic amplitude modulation in two-colour phase-controlled frequency mixing

Authors
Andiel, U Tsakiris, GD Cormier, E Witte, K
Citation
U. Andiel et al., High-order harmonic amplitude modulation in two-colour phase-controlled frequency mixing, EUROPH LETT, 47(1), 1999, pp. 42-48
Citations number
27
Categorie Soggetti
Physics
Journal title
EUROPHYSICS LETTERS
ISSN journal
02955075 → ACNP
Volume
47
Issue
1
Year of publication
1999
Pages
42 - 48
Database
ISI
SICI code
0295-5075(19990701)47:1<42:HHAMIT>2.0.ZU;2-P
Abstract
Two-colour phase control of gas harmonic generation has been demonstrated u sing a 200-fs Ti:sapphire laser and its second harmonic. In the detection r ange covering the 7th to the 20th harmonic order, a modulation of up to 27% in the harmonic emission signal was observed by precisely varying the rela tive phase between the two colours. Simulations based on the single-particl e response predict enhancement of the high harmonic efficiency by orders of magnitude for a given relative phase between the two colours.