Mode behaviour of a waveguide annular CO2 laser with a Talbot cavity
Authors: Lapucci A., Ciofini M., Mascalchi S.
Autors Affiliation: Istituto Nazionale di Ottica, Largo E. Fermi 6, 50125 Firenze, Italy Applicata
Abstract: The use of Talbot cavity together with a phase-correcting mirror on the 100 W class annular laser is studied. The cavity is based on: two cm long coaxial aluminum electrodes forming a 2.5 mm thick annular waveguide of central diameter 27.5 mm, a flat enhanced-silver coated silicon mirror, a flat ZnSe outcoupler and an aluminum spatial filter. The experimental results are described and compared with theoretical optimal expectations. Design parameters of the resonator are also discussed.
KeyWords: Electrodes; Laser beams; Laser modes; Laser resonators; Mirrors; Optical systems; Optical waveguides, Profile modulated mirror; Silicon mirror; Spatial filter; Talbot cavity, Carbon dioxide lasersDOI: 10.1109/CLEOE.1998.719568