Reply to Comment on "Direct observation of laser filamentation in high-order harmonic generation"

Matthew Turner, Nicole Brimhall, Michael Ware, Justin Peatross
2007 Optics Letters  
We concede the point raised by Tosa and Nam regarding the interpretation of our recent measurements of intense laser pulse dynamics. Although the measured fluence shows a double focus that is suggestive of filamentation, pulse-propagation simulations show no resurgence in intensity at the second beam waist. An interplay between the generation of plasma and natural diffraction of the apertured beam gives rise to this unusual behavior without requiring a sizable n 2 .
doi:10.1364/ol.32.002709 fatcat:xbkxuxohdzd4jalymrtejrrksu