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- W4386428038 abstract "Volume Bragg gratings (VBGs) have gained growing interest over the last decades for diverse applications. Typically, they are produced in photo-thermo-refractive glasses using UV light [1]. Later, femtosecond (fs) laser pulses were used to produce refractive-index modifications <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$(Delta mathrm{n})$</tex> , mainly type-l, in various other materials [2]. To obtain more freedom in designing optical systems, it is desirable to inscribe VBGs in glasses exhibiting a much higher <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$Delta mathrm{n}$</tex> , such as silver-containing phosphate glasses. Indeed, a novel type of <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$Delta mathrm{n}$</tex> has been demonstrated in such glasses, denominated Type-A (A from Argentum), which is related to the spatial distribution of the photo-induced silver clusters around the interaction voxel and exhibits two positive <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$Delta mathrm{n}$</tex> peaks at each laser pass [3], reaching a value of up to <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$2times 10^{-2}$</tex> [4]. Recently, we demonstrated the first Type-A VBGs inscribed in silver-containing phosphate glasses with a Gaussian-Bessel beam. The most efficient grating was recorded in <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$sim 1$</tex> hour at a velocity of 20 <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$mu mathrm{m}/s$</tex> for a transverse area of <tex xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink>$400times 400 mu mathrm{m}^{2}$</tex> . Indeed, there is a growing interest in writing high throughput VBGs suitable for industrial manufacturing." @default.
- W4386428038 created "2023-09-05" @default.
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- W4386428038 date "2023-06-26" @default.
- W4386428038 modified "2023-10-18" @default.
- W4386428038 title "Femtosecond Inscription of Type-A Volume Bragg Gratings in Silver-Containing Phosphate Glasses" @default.
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- W4386428038 doi "https://doi.org/10.1109/cleo/europe-eqec57999.2023.10232355" @default.
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