title: Modes of resonators with mirror reflectivity modulated by absorbing masks.
abstract: The modes of a stable laser resonator containing, near one mirror, an absorbing mask with two apertures have been calculated on the basis of scalar diffraction theory and experimentally observed in a pulsed Nd:YAG laser. The mode structure has been investigated as a function of the mask geometry, and an interpretation in terms of supermodes is provided.
authors.forename: S
authors.initials: S
authors.lastname: De Silvestri
authors.forename: V
authors.initials: V
authors.lastname: Magni
authors.forename: O
authors.initials: O
authors.lastname: Svelto