Polarization effects in two-photon nonresonant ionization of argon with extreme-ultraviolet and infrared femtosecond pulses

Journal Article · Sat May 01 00:00:00 EDT 2004 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.69.051401· OSTI ID:20641087

O'Keeffe, P ^[1]; Lopez-Martens, R; Mauritsson, J; Johansson, A; L'Huillier, A ^[2]; Veniard, V; Taieeb, R; Maquet, A ^[3]; Meyer, M ^[1]

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1. LURE, Centre Universitaire Paris-Sud, Batiment 209D, F-91898 Orsay Cedex (France)
2. Department of Physics, Lund Institute of Technology, P.O. Box 118, S-22100 Lund (Sweden)
3. LCP-MR, Universite Pierre et Marie Curie, 11 Rue Pierre et Marie Curie, F-75231 Paris Cedex 05 (France)

We report the results of experimental and theoretical investigations of the two-color, two-photon ionization of Ar atoms, using femtosecond pulses of infrared laser radiation in combination with its extreme-ultraviolet harmonics. It is shown that the intensities of the photoelectron lines resulting from the absorption of photons from both fields strongly depend both on the respective phases of the fields and on atomic quantities such as the asymmetry parameter. These phases, which are notoriously difficult to measure, can be estimated by changing the polarization state of the laser radiation.

• OSTI ID: 20641087
• Journal Information: Physical Review. A, Vol. 69, Issue 5; Other Information: DOI: 10.1103/PhysRevA.69.051401; (c) 2004 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ABSORPTION
ARGON
ASYMMETRY
ATOMS
COLOR
EXTREME ULTRAVIOLET RADIATION
HARMONICS
LASER RADIATION
MULTI-PHOTON PROCESSES
PHOTOELECTRON SPECTROSCOPY
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
PHOTONS
POLARIZATION
PULSES
VELOCITY