2-COLOR PHASE-CONTROL IN TUNNELING IONIZATION AND HARMONIC-GENERATIONBY A STRONG LASER FIELD AND ITS 3RD-HARMONIC

Authors
WATANABE S KONDO K NABEKAWA Y SAGISAKA A KOBAYASHI Y
Citation
S. Watanabe et al., 2-COLOR PHASE-CONTROL IN TUNNELING IONIZATION AND HARMONIC-GENERATIONBY A STRONG LASER FIELD AND ITS 3RD-HARMONIC, Physical review letters, 73(20), 1994, pp. 2692-2695
Citations number
14
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
73
Issue
20
Year of publication
1994
Pages
2692 - 2695
Database
ISI
SICI code
0031-9007(1994)73:20<2692:2PITIA>2.0.ZU;2-A
Abstract
Two-color phase control in the total ion yield of ionization is succes sfully demonstrated in a tunneling regime by using a 100-fs Ti:sapphir e laser and its third harmonic. Adding the third harmonic with an inte nsity of only 10% enhances the ion yield by a factor of 7. In photoele ctron spectra, above threshold ionization peaks due to the third harmo nic disappear when two colors are superimposed, resulting in a continu um spectrum. This shows two-color interference clearly. The intensitie s of high-order harmonics in the plateau region are enhanced by an ord er of magnitude.