title: Unstable resonator with canceling edge waves.
abstract: Diffractive feedback from the edge of the output mirror of an unstable resonator can cause intensity spikes and make the resonator sensitive to tilts. A design for a stepped feedback mirror is proposed that substantially reduces the effect of edge diffraction on the resonator modes. The predicted results are a more uniform intensity profile and greatly reduced tilt sensitivity.
authors.forename: M E
authors.initials: ME
authors.lastname: Smithers
authors.forename: T C
authors.initials: TC
authors.lastname: Salvi
authors.forename: G C
authors.initials: GC
authors.lastname: Dente