“…Plasma channeling is one of the most fascinating off-shoots of laser plasma interaction research, due to its potential applications in laser guiding in atmosphere (Alexeev et al, 2005;Woste et al, 2006) particle acceleration (Geddes et al, 2004;Kumar et al, 2010) transportation of ion beams (Penache et al, 2002), in the development of X-ray lasers (Chou et al, 2007;Zhao et al, 2008) etc. To date, however, laser propagation has been severely limited by the lack of a controllable method for extending the propagation distance of the focused laser pulse.…”