Filament conductivity enhancement through nonlinear beam interaction
Abstract
Laser filament applications relying on filament plasma conductivity are limited by their low electron densities and corresponding short lifetimes. Filament plasma formation, an intensity-dependent process, is limited by the clamping of the filament core intensity. Consequently, increasing initial beam energy results in the breakup of the beam into multiple filaments rather than the enhancement of the electron density and conductivity of an individual filament. However, we demonstrate here the augmentation of the filament plasma density up to three times the typical value through the energy exchange between two co-propagating femtosecond beams with total powers between 1.7 and 2.2 Pfil.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 26, 2020
- Source ID
- 10.1364/oe.401278
Entities
People
- Danielle Reyes
- Jessica Peña
- Martin Richardson
- Natalia M. Litchinitser
- S. Rostami Fairchild
- Wiktor Walasik
Organizations
- Army Research Office