The light filament as a new nonlinear polarization state
Abstract
We present an analytical approach to the theory of nonlinear propagation in gases of femtosecond optical pulses with broad-band spectrum . The vector character of the nonlinear third-order polarization of the electrical field in air is investigated in details. A new polarization state is presented by using left-hand and right-hand circular components of the electrical field . The corresponding system of vector amplitude equations is derived in the rotating basis. We found that this system of nonlinear equations has vector soliton solutions with Lorentz shape. The solution presents a relatively stable propagation and rotation with GHz frequency of the vector of the electrical field in a plane orthogonal to the direction of propagation. The evolution of the intensity profile demonstrates a weak self-compression and a week spherical wave in the first milliseconds of propagation.
Cite
@article{arxiv.1507.03062,
title = {The light filament as a new nonlinear polarization state},
author = {Lubomir M. Kovachev},
journal= {arXiv preprint arXiv:1507.03062},
year = {2015}
}
Comments
arXiv admin note: substantial text overlap with arXiv:1503.00953