Abstract

Several active schemes have been proposed to produce finite-aperture approximations of Bessel and Bessel-Gauss beams in resonators [1-5]. Rogel et al [4] and Khilo et al [5] proposed independently a resonator supporting Bessel-Gauss fields based on the fact that an axicon transforms an incident plane wave into a Bessel beam. The axicon-based Bessel-Gauss resonator has the technical advantage that it does not require intracavity optics or special shape of the active medium, and employs conventional mirrors (not complex shaped mirrors) and commercially available axicons. Most of the analysis of the axicon based Bessel-Gauss resonator has centered on applying the Fox and Li method to describe numerically the resonant modes for plane output mirrors.

© 2003 Optical Society of America