Submitted Paper

Amplification of Intense Light Fields by Nearly Free ElecronsMary Matthews, Felipe Morales, Alexander Patas, Albrecht Lindinger, Julien Gateau, Nicolas Berti, Sylvain Hermelin, Jérôme Kasparian, Maria Richter, Timm Bredtmann, Olga Smirnova, Jean-Pierre Wolf and Misha Ivanov

We present new opportunities for enhancing and controlling lasing inside laser filaments. The novel, general mechanism relies on laser-dressed states in neutral atoms and uses shaped laser pulses to control their population and seed gain.