title: Two-dimensional simulation of an unstable resonator with a stable core.
abstract: An optical resonator simulation code based on the idea of a partially coherent optical field has been developed and used to optimize the design parameters of an unstable resonator with a stable core. The resonator was intended for use with low-gain, large-bore lasers, such as the chemical oxygen-iodine laser (COIL). First the design parameters of the resonator were optimized by the simulation code; then a set of mirrors was fabricated for a small-scale COIL. A 14-W output with M(2) = 29 was obtained. The experimentally obtained results were in good agreement with calculations.
authors.affiliation: Tokai University, 1117 Kita-Kaname, Hiratsuka City 259-1292, Japan. masamori@keyaki.cc.u-tokai.ac.jp
authors.forename: M
authors.initials: M
authors.lastname: Endo
authors.forename: M
authors.initials: M
authors.lastname: Kawakami
authors.forename: K
authors.initials: K
authors.lastname: Nanri
authors.forename: S
authors.initials: S
authors.lastname: Takeda
authors.forename: T
authors.initials: T
authors.lastname: Fujioka