Amplification of transition-Cherenkov terahertz radiation of femtosecond filament in air

  • Yi Liu
  • , Auŕlien Houard
  • , Bernard Prade
  • , Andŕ Mysyrowicz
  • , Abdourahmane Diaw
  • , Vladimir T. Tikhonchuk

Research output: Contribution to journalArticlepeer-review

Abstract

The transition-Cherenkov terahertz radiation from a femtosecond laser filament in air is enhanced by three orders of magnitude in the presence of a longitudinal static electric field, while the radiation pattern and the polarization remain the same. An amplified longitudinal electron current inside the filament is responsible for this amplified terahertz emission.

Original languageEnglish
Article number051108
JournalApplied Physics Letters
Volume93
Issue number5
DOIs
Publication statusPublished - 22 Sept 2008

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