Fragmentation and Ionization Dynamics of C{sub 60} in Elliptically Polarized Femtosecond Laser Fields

Journal Article · Fri Jan 16 04:00:00 EST 2009 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.102.023003· OSTI ID:21180114

Hertel, I V; Shchatsinin, I; Laarmann, T; Zhavoronkov, N; Ritze, H -H; Schulz, C P ^[1]

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1. Max Born Institute, Max-Born-Strasse 2a, D-12489 Berlin-Adlershof (Germany)

Ionization and fragmentation of C{sub 60} fullerenes is studied in elliptically polarized, intense fs laser fields at 797 nm [I=(0.5-4.3)x10{sup 14} W cm{sup -2}] and contrasted with Xe{sup +}, utilizing time-of-flight mass spectrometry. Very pronounced changes of parent and fragment ion yield as a function of ellipticity are observed. At lower intensities reduction of the ion yield for circular polarization establishes a coherent two-photon process connected with the key role of the LUMO+1(t{sub 1g})'doorway state' and multielectron dynamics. Comparison with the behavior at 399 nm corroborates this finding. At high intensities enhanced fragmentation is observed which is tentatively attributed to returning loops of electron trajectories by the combined action of the C{sub 60}{sup +} field and the circular laser field.

• OSTI ID: 21180114
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 2 Vol. 102; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
FRAGMENTATION
FULLERENES
IONIZATION
LASER RADIATION
MASS SPECTROSCOPY
MULTI-PHOTON PROCESSES
POLARIZATION
TIME-OF-FLIGHT METHOD
XENON IONS