Abstract
The properties of the eigenmodes of a capillary tube are examined in the context of ultrashort intense laser pulse guiding. The dispersion relation for the eigenmodes of a cylindrical hollow waveguide is derived and the family of eigenmodes is shown to be a solution of the wave equation up to the first order under the condition where is the light wave number and a the capillary tube radius. The expressions of the fields for the eigenmodes are given at zero and first order of a small parameter equal to the ratio of the perpendicular to longitudinal wave number and the absorded intensity at the wall is estimated.
- Received 5 June 2001
DOI:https://doi.org/10.1103/PhysRevE.65.026405
©2002 American Physical Society