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

Journal Article · Fri Apr 01 00:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PhysRevA.71.045401· OSTI ID:20653373

Tang, X P; Sharifi, M; Chin, S L ^[1]; Becker, A ^[2]; Liu, W ^[1]; Kosareva, O; Kandidov, V P ^[3]; Agostini, P ^[1]

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1. Centre d'Optique, Photonique et Laser (COPL) and Departement de Physique de Genie Physique et d'Optique, Universite Laval, Quebec, Quebec, G1K 7P4 (Canada)
2. Max-Planck-Institut fuer Physik Komplexer Systeme, Noethnitzer Strasse 38, D-01187 Dresden (Germany)
3. International Laser Center, Department of Physics, Moscow State University, Moscow 119899 (Russian Federation)

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.

• OSTI ID: 20653373
• Journal Information: Physical Review. A, Vol. 71, Issue 4; Other Information: DOI: 10.1103/PhysRevA.71.045401; (c) 2005 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
EXCITATION
FOCUSING
GEOMETRY
LASER RADIATION
NONLINEAR OPTICS
NONLINEAR PROBLEMS
PHOTON-MOLECULE COLLISIONS
PULSES
TOLUENE
VELOCITY