title: Transverse-mode selective resonant grating-mirrors for high power and high brightness emission.
abstract: The finite angular spectral width of a 2D resonant grating mirror is adjusted to select the fundamental transverse mode of a laser and to filter out higher order modes. The selection principle is explained phenomenologically on a simplified 1D model. The 2D design is made so as to sustain the large field concentration in the grating slab-waveguide mirror, and the technology permitting to obtain the resonant reflection within the gain bandwidth of two types of laser is described. The blank experimental measurements by means of a white light supercontinuum are shown to match the targeted specifications on the resonance spectral position and angular width.
authors.forename: Nikolay
authors.initials: N
authors.lastname: Lyndin
authors.forename: Thomas
authors.initials: T
authors.lastname: Kämpfe
authors.forename: Svetlen
authors.initials: S
authors.lastname: Tonchev
authors.forename: Stephanie
authors.initials: S
authors.lastname: Reynaud
authors.forename: Olivier
authors.initials: O
authors.lastname: Parriaux