title: Extraction of high-quality beams from narrow annular laser sources.
abstract: We have analyzed the propagation properties of the field produced by circular arrays of coherent optical sources, obtaining the conditions for the generation of good-quality global beams. Such conditions can be obtained by the use of resonators based on the Talbot effect. This appears to be a practical method for the construction of simple, low-cost resonators for compact diffusion-cooled high-power lasers with annular format. Low-loss annular Talbot cavity configurations have also been studied.
authors.affiliation: Istituto Nazionale di Ottica, Largo EFermi 6, 50125 Firenze, Italy. lapo@ino.it
authors.forename: A
authors.initials: A
authors.lastname: Lapucci
authors.forename: M
authors.initials: M
authors.lastname: Ciofini