Self-guided propagation of femtosecond light pulses in water

Abstract

We report experimental evidence of self-guided propagation of femtosecond laser pulses in water. A light filament induced by 170-fs, 527-nm pulses has a diameter of $60 \mathit{\mu }\mathrm{m}$ (at the $1/e^2$ level) and persists over a distance of 20 mm. The filamentary mode is sustained over a wide range of input power, and the energy excess is converted into conical emission. In the time domain, the pulse trapped in a filamentary mode experiences a number of splittings occurring in the early stage of filament formation.

© 2003 Optical Society of America

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