Filamentational Instability of Partially Coherent Femtosecond Optical Pulses in Air

Details Filamentational Instability of Partially Coherent Femtosecond Optical Pulses in Air Filamentational Instability of Partially Coherent Femtosecond Optical Pulses in Air

2006-03-21

arxiv.org/abs/physics/0603174v1

Opt. Lett. 31, 1884-1886 (2006)

Physics

Optics

8 pages, 2 figures, to appear in Optics Letters

Scientific paper

10.1364/OL.31.001884

The filamentational instability of spatially broadband femtosecond optical pulses in air is investigated by means of a kinetic wave equation for spatially incoherent photons. An explicit expression for the spatial amplification rate is derived and analyzed. It is found that the spatial spectral broadening of the pulse can lead to stabilization of the filamentation instability. Thus, optical smoothing techniques could optimize current applications of ultra-short laser pulses, such as atmospheric remote sensing.

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