A. Shevchenko, Dept. of Eng. Phys. & Mathematics, Helsinki Univ. of Technol., Espoo, Finland K. Lindfors, Dept. of Eng. Phys. & Mathematics, Helsinki Univ. of Technol., Espoo, Finland S.C. Buchter, Dept. of Eng. Phys. & Mathematics, Helsinki Univ. of Technol., Espoo, Finland M. Kaivola, Dept. of Eng. Phys. & Mathematics, Helsinki Univ. of Technol., Espoo, Finland
The laser reported in this work has a gain medium pumped directly with an evanescent optical wave. Bright disk laser radiation is observed to propagate isotropically in a plane perpendicular to the capillary axis.