2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/85777We deduce a set of circularly polarized Gaussian laser beam modes via a separation-of-variables solution to the Helmholtz wave equation in oblate spheriodal coordinates. On transforming to cylindrical coordinates these become the well-known Gaussian-Laguerre modes.15 pages, 4 figuresClassical Physicstext