期刊
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
卷 54, 期 8, 页码 -出版社
IOP Publishing Ltd
DOI: 10.1088/1361-6455/abf9f1
关键词
strong-field physics; high-harmonic generation; extreme ultraviolet; attosecond pulse trains
资金
- 'HELLAS-CH' (MIS Grant) [Operational Program 'Competitiveness, Entrepreneurship and Innovation' (NSRF 2014-2020)] [5002735]
- 'HELLAS-CH' (MIS Grant) [5002735]
- 'HELLAS-CH' (MIS Grant) [European Union (European Regional Development Fund)] [5002735]
- European Union
- European Regional Development Fund (GINOP Grant) [2.3.6-15-2015-00001]
- LASERLAB-EUROPE (EC's Seventh Framework Programme Grant) [284464]
- Hellenic Foundation for Research and Innovation (HFRI)
- General Secretariat for Research and Technology (GSRT) [645, NEA-APS HFRI-FM17-3173]
Signatures of strong-field effects induced by an intense attosecond pulse train, synthesized by the superposition of a Ti:sapphire laser high-order harmonics are observed in atomic two-photon ionization. Ponderomotive shifts in the photoelectrons' kinetic energies have been measured in the non-resonant two-photon ionization of Helium atoms induced by the interaction with extreme ultraviolet radiation at intensities on the order of 10(15) W cm(-2). These results inaugurate the topic of strong-field phenomena in experimental laser based attosecond science.
Signatures of strong-field effects induced by an intense attosecond pulse train, synthesized by the superposition of a Ti:sapphire laser high-order harmonics are observed in atomic two-photon ionization. Ponderomotive shifts in the photoelectrons' kinetic energies have been measured in the non-resonant two-photon ionization of Helium atoms induced by the interaction with extreme ultraviolet radiation at intensities on the order of 10(15) W cm(-2). These results inaugurate the topic of strong-field phenomena in experimental laser based attosecond science.
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