Few-cycle light bullets created by femtosecond filaments.
We report a generic mechanism of light bullet formation during the filamentation of femtosecond pulses. This mechanism is tested for gaseous and dense media. It allows the production of robust, sub-10 fs structures of light with no post-compression stage. By coupling an infrared pump with a seed beam, tunable pulses with durations down to a few femtoseconds can be generated by parametric processes.
Département de Physique Théorique et Appliquée, CEA-DAM/Ile de France, BP 12, 91680 Bruyères-le-Châtel, France. luc.berge@cea.fr
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