THz emissions by two-color filaments in air: Revisiting the wavelength scaling

L. Bergé (1) , A. Nguyen (1) , K. J Kaltenecker (2) , J. C Delagnes (3) , B. Zhou (2) , E. Cormier (3) , N. Fedorov (3) , R. Bouillaud (3) , D. Descamps (3) , I. Thiele (4) , Stefan Skupin (5) , P. U Jepsen (2)

1 DPTA - Département de Physique Théorique et Appliquée
2 DTU Fotonik
3 CELIA - Centre d'Etudes Lasers Intenses et Applications
4 Chalmers University of Technology [Göteborg]
5 ILM - Institut Lumière Matière [Villeurbanne]

We report impressive growths in the terahertz energies supplied by air plasmas created by two-color laser pulses whose fundamental wavelength is increased. Comprehen- sive 3D simulations reveal the crucial role of the two-color relative phase.

Domaines: Physique des plasmas [physics.plasm-ph]; Physique Atomique [physics.atom-ph]; Optique [physics.optics]

L. Bergé, A. Nguyen, K. J Kaltenecker, J. C Delagnes, B. Zhou, et al.. THz emissions by two-color filaments in air: Revisiting the wavelength scaling. Nonlinear Optics, 2019, Waikoloa Beach, United States. pp.NTu2B.1, ⟨10.1364/NLO.2019.NTu2B.1⟩. ⟨hal-02265557⟩