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Discrete nonplanar reflections from an ultrashort pulse written volume Bragg grating

: Richter, Daniel; Voigtländer, Christian; Krämer, Ria G.; Thomas, Jens U.; Tünnermann, Andreas; Nolte, Stefan


Optics Letters 40 (2015), Nr.12, S.2766-2769
ISSN: 0146-9592
Fraunhofer IOF ()

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.