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In recent years, Volume Bragg gratings (VBGs) have seen widespread use, traditionally inscribed in photo-thermo-refractive glasses. The emergence of femtosecond lasers has enabled VBG inscription in various materials. Silver-containing glasses have drawn attention due to their ability to produce strong Type-A (“A” for Argentum) refractive index changes. We explored the laser writing processes for optimizing the recording inscription of Type-A VBGs. The Gaussian-Bessel beam is employed to produce a single plane grating with 6700 µm3/s throughput while the phase mask approach is investigated to accelerate VBG inscription, allowing record throughput up to 106 µm3/s, paving the way for industrial applications.
Conference Presentation
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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