title: Analysis of an optical resonator formed by a pair of specially shaped                 axicons.
abstract: We propose a design for an optical resonator suited to using large-bore active media. The resonator consists of a pair of waxicons, so we call it a "wwaxicon optical resonator." The resonator is considered a conventional (solid) resonator surrounded by coaxial annular resonators. A numerical simulation of the resonator designed for use in a commercial CO2 laser is performed. It is found that parasitic oscillation modes can be suppressed by the use of an spatial-frequency filter. The resonator exhibits oscillation in the TEM*01 transverse mode and produces twice as much output power as a sevenfold multipass stable optical resonator.
authors.affiliation: Department of Physics, School of Science, Tokai University, Hiratsuka City, Kanagawa, Japan.
authors.forename: Masamori
authors.initials: M
authors.lastname: Endo
authors.forename: Motoi
authors.initials: M
authors.lastname: Sasaki
authors.forename: Ryoji
authors.initials: R
authors.lastname: Koseki