HARB, Joelle; TALBOT, Lauris; PETIT, Yannick; BERNIER, Martin; CANIONI, Lionel

doi:10.1364/oe.483722

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HARB, Joelle
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

TALBOT, Lauris
Center for Optics, Photonics and Lasers [COPL]

PETIT, Yannick
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Article de revue

Ce document a été publié dans

Optics Express. 2023-04-28, vol. 31, n° 10, p. 15736-15746

Optical Society of America - OSA Publishing

Résumé en anglais

To our knowledge, we report on the first demonstration of Type A VBGs inscribed in silver-containing phosphate glasses by femtosecond laser writing. The gratings are inscribed plane-by-plane by scanning the voxel of a 1030 nm Gaussian-Bessel inscription beam. This results in a refractive-index modification zone, induced by the appearance of silver clusters, extending over a much larger depth than those obtained with standard Gaussian beams. As a result, a high diffraction efficiency of 95% at 632.8 nm is demonstrated for a 2-µm period transmission grating with a 150-µm effective thickness indicating a strong refractive-index modulation of 1.78 × 10 −3. Meanwhile, a refractive-index modulation of 1.37 × 10 −3 was observed at a wavelength of 1.55 µm. Thus, this work opens the avenue for highly effective femtosecond-written VBGs suitable for industrial applications.< Réduire

Mots clés en anglais

Femtosecond Laser inscription

Silver-containing glasse

Silver clusters

Photosensitive glasses

Photonic integrated circuits

Refractive index modifications

Volume Bragg grating

DOI

http://dx.doi.org/10.1364/oe.483722

Project ANR

Architectures photoniques intégrées inscrites par laser femtoseconde pour étalonnage en microscopie de fluorescence dans l'infrarouge

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026