title: Hybrid stable-unstable resonators for diffusion-cooled CO(2) slab lasers.
abstract: We present the numerical and experimental study that we carried out to compare the performances of two hybrid stable-unstable resonators for diffusion-cooled CO(2) slab lasers. The two resonators are designed to fit a 320 mm × 60 mm ×2 mm rf-discharge channel and are both guided in the narrow transverse direction. They differ in the other transverse direction, consisting of a positive- or a negative-branch unstable resonator scheme. The two solutions have been characterized in terms of modal structure, power extraction, stability, and quality of the extracted beam.
authors.forename: A
authors.initials: A
authors.lastname: Lapucci
authors.forename: A
authors.initials: A
authors.lastname: Labate
authors.forename: F
authors.initials: F
authors.lastname: Rossetti
authors.forename: S
authors.initials: S
authors.lastname: Mascalchi