Nanoparticle generation inside Ag-doped LBG glass by femtosecond laser irradiation

Marie Vangheluwe (1, 2) , Yannick Petit (1, 3) , Nicolas Marquestaut (1) , Alexia Corcoran (3, 2) , Evelyne Fargin (3) , Réal Vallée (2) , Thierry Cardinal (3) , Lionel Canioni (1)

1 CELIA - Centre d'Etudes Lasers Intenses et Applications
2 Centre d’Optique, Photonique et Laser
3 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

Precipitation of silver nanoparticles (Ag-NPs) can occur in a silver-doped lanthanum borogermanate glass matrix, either under thermal annealing or femtosecond direct laser writing (DLW). Macroscopic transmission and localized µ-fluorescence emission spectra provide typical plasmon resonance behavior of Ag-NPs. Annealing leads to the spatially random homogeneous creation of small NPs at low concentrations, while DLW shows higher and broader plasmon peaks, proving highly concentrated 3D localized structured NPs. DLW at high fluencies shows photo-induced dichroism, potentially giving access to 3D dichroic photonic responses.

Mots clés: (300.1030) Absorption; OCIS codes: (140.3390) Laser materials processing; (140.3450) Laser-induced chemistry; (160.2540) Fluorescent and luminescent materials; (220.4240) Nanostructure fabrication; (260.0260) Resonance

Domaines: Matériaux

Marie Vangheluwe, Yannick Petit, Nicolas Marquestaut, Alexia Corcoran, Evelyne Fargin, et al.. Nanoparticle generation inside Ag-doped LBG glass by femtosecond laser irradiation. Optical Materials Express, 2016, 6 (3), pp.743-748. ⟨10.1364/OME.6.000743⟩. ⟨hal-01358445⟩