Characterisation of white-light supercontinuum filaments in condensed media

This paper presents accurate measurements of the filament length and width by various experimental techniques. Coherence property is also demonstrated by using an array of diffractive microlenses to focus the beam through a sample of B 270 glass. Finally, a simple technique is presented for inducing filamentation without the aid of a focusing lens and for controlling the location of the filament on the axis of propagation. This study is essential to gain an understanding of the various physical properties which affect the filamentation process.