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20 June 2024 Towards high-throughput Type-A Volume Bragg gratings inscribed with femtosecond laser for industrial applications.
Joelle Harb, Lauris Talbot, Yannick Petit, Martin Bernier, Lionel Canioni
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Proceedings Volume PC13005, Laser + Photonics for Advanced Manufacturing ; PC130050T (2024) https://doi.org/10.1117/12.3017135
Event: SPIE Photonics Europe, 2024, Strasbourg, France
Abstract
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.
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(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Joelle Harb, Lauris Talbot, Yannick Petit, Martin Bernier, and Lionel Canioni "Towards high-throughput Type-A Volume Bragg gratings inscribed with femtosecond laser for industrial applications.", Proc. SPIE PC13005, Laser + Photonics for Advanced Manufacturing , PC130050T (20 June 2024); https://doi.org/10.1117/12.3017135
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KEYWORDS
Femtosecond phenomena
Industrial applications
Volume Bragg gratings
Glasses
Refractive index
Phase shift keying
Silver
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