Enhanced fragmentation of toluene through linear and nonlinear increase of the focal spot area of an ultrashort laser pulse

Enhanced fragmentation of toluene through linear and nonlinear increase of the focal spot area of an ultrashort laser pulse

Toluene fragmentation by intense femtosecond laser pulses is experimentally investigated. A strong increase of the toluene fragmentation appears to correlate with an increase of the focal area due to changes in the focal geometry and nonlinear small-scale self-focusing. The scenario of Raman modes e...

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Veröffentlicht in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 2005-04, Vol.71 (4), Article 045401
Hauptverfasser: Tang, X. P., Becker, A., Liu, W., Sharifi, M., Kosareva, O., Kandidov, V. P., Agostini, P., Chin, S. L.
Format: Artikel
Sprache:eng
Schlagworte:
ATOMIC AND MOLECULAR PHYSICS
EXCITATION
FOCUSING
GEOMETRY
LASER RADIATION
NONLINEAR OPTICS
NONLINEAR PROBLEMS
PHOTON-MOLECULE COLLISIONS
PULSES
TOLUENE
VELOCITY
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Zusammenfassung:Toluene fragmentation by intense femtosecond laser pulses is experimentally investigated. A strong increase of the toluene fragmentation appears to correlate with an increase of the focal area due to changes in the focal geometry and nonlinear small-scale self-focusing. The scenario of Raman modes excitation proposed in an earlier publication [A.M. Mueller et al., Phys. Rev. Lett. 88, 023001 (2002)] is ruled out as the dominant effect for the enhancement.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.71.045401