Title :
High-power CO2 laser with coaxial waveguide and diffusion cooling
Author :
Ehrlichmann, Dietmar ; Habich, Uwe ; Plum, Heinz-Dieter
Author_Institution :
Fraunhofer-Inst. fuer Lasertechnik, Aachen, Germany
fDate :
7/1/1993 12:00:00 AM
Abstract :
A diffusion-cooled CO2 laser using a coaxial waveguide is analyzed theoretically and experimentally. The resonator used for extracting the laser beam consists of two annular plane mirrors enclosing the two ends of the waveguide. The beam exits through an aperture in one of these annular mirrors. The mirror tilt is shown to provide efficient beam extraction through this aperture. A theoretical resonator model based on the vector modes of propagation in a dielectric coaxial waveguide is presented. Experimental data show the feasibility of coaxial waveguide lasers and their ability to supply beams of high power and quality. Experimental data are discussed with respect to the presented theory
Keywords :
carbon compounds; cooling; gas lasers; laser accessories; laser cavity resonators; mirrors; optical waveguides; CO2 laser; annular plane mirrors; aperture; beam exits; beam quality; coaxial waveguide; dielectric waveguides; diffusion cooling; diffusion-cooled; efficient beam extraction; high power; laser beam; mirror tilt; resonator; theoretical resonator model; vector modes; waveguide lasers; Apertures; Coaxial components; Data mining; Laser beams; Laser modes; Laser theory; Mirrors; Planar waveguides; Waveguide lasers; Waveguide theory;
Journal_Title :
Quantum Electronics, IEEE Journal of
