title: Discrete nonplanar reflections from an ultrashort pulse written volume Bragg grating.
abstract: In this Letter, we present a direct writing technique for two-dimensional periodic volume Bragg gratings (VBGs) in fused silica based on the phase mask technology, ultrashort laser pulses, and three-beam interference. An algorithm to predict the grating pattern and its diffraction behavior under collimated, spectral broad illumination is developed. The predicted data are in good agreement with the measurements.
authors.forename: Daniel
authors.initials: D
authors.lastname: Richter
authors.forename: Christian
authors.initials: C
authors.lastname: Voigtländer
authors.forename: Ria G
authors.initials: RG
authors.lastname: Krämer
authors.forename: Jens U
authors.initials: JU
authors.lastname: Thomas
authors.forename: Andreas
authors.initials: A
authors.lastname: Tünnermann
authors.forename: Stefan
authors.initials: S
authors.lastname: Nolte