Phase Measurement of Resonant Two-Photon Ionization in Helium

Autor:	Swoboda, M., Fordell, T., Klünder, K., Dahlström, J. M., Miranda, M., Buth, C., Schafer, K. J., Mauritsson, J., L'Huillier, A., Gisselbrecht, M.
Rok vydání:	2010
Předmět:	Physics - Atomic Physics Physics - Optics
Zdroj:	Physical Review Letters 2010
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.104.103003
Popis:	We study resonant two-color two-photon ionization of Helium via the 1s3p 1P1 state. The first color is the 15th harmonic of a tunable titanium sapphire laser, while the second color is the fundamental laser radiation. Our method uses phase-locked high-order harmonics to determine the {\it phase} of the two-photon process by interferometry. The measurement of the two-photon ionization phase variation as a function of detuning from the resonance and intensity of the dressing field allows us to determine the intensity dependence of the transition energy. Comment: 4 pages, 5 figures, under consideration
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1002.2550 Zobrazit plný text záznamu View this record from Arxiv