Phys. Rev. A 76, 055802 (2007) [4 pages]Phase- and group-matched nonlinear interactions mediated by multiple filamentation in Kerr mediaReceived 30 July 2007; published 26 November 2007 Laser-pulse filamentation in Kerr media induced by a strongly elliptic input beam leads to breakup into a periodic array of filaments. In the plane of the filament array we observe strong Stokes and anti-Stokes emission at large angles. For 1 ps input pulses the measured angles are found to support two different phase-matching configurations: one nontransversally phase matched and the other perfectly phase matched. Shorter 200 fs pulses give rise to group-velocity-matched Raman conversion. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.76.055802
DOI:
10.1103/PhysRevA.76.055802
PACS:
42.65.Re, 42.65.Jx, 42.65.Dr
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