Patterning linear and nonlinear optical properties of photosensitive glasses by femtosecond structured light

Konstantin Mishchik (1) , Yannick Petit (1, 2) , Etienne Brasselet (1) , Arnaud Royon (1) , Thierry Cardinal (2) , Lionel Canioni (1)

1 LOMA - Laboratoire Ondes et Matière d'Aquitaine
2 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

We report on structured light-induced femtosecond direct laser writing (DLW) under tight focusing in non-commercial silver-containing zinc phosphate glass, which leads to original patterns of fluorescent silver clusters. These fluorescence topologies show unique features of frustrated diffusion of charged species, giving rise to distorted silver cluster spatial distributions. Fluorescence and second harmonic generation correlative microscopy demonstrate the realization of structured light-induced direct laser poling, resulting from a laser-induced permanent and stable electric field buried inside the modified glass. Thus, structured light-induced DLW remarkably enables both linear and nonlinear patterning. This work highlights the interest of optical phase engineering to obtain nontrivial beam profiles and subsequent photo-induced patterns that cannot be reached under Gaussian beam irradiation.

Mots clés: Laser materials processing; Singular optics; Multiphoton processes; Multispectral and hyperspectral imaging; Nonlinear optics; materials

Domaines: Matériaux

Konstantin Mishchik, Yannick Petit, Etienne Brasselet, Arnaud Royon, Thierry Cardinal, et al.. Patterning linear and nonlinear optical properties of photosensitive glasses by femtosecond structured light. Optics Letters, 2015, 40 (2), pp.201-204. ⟨10.1364/OL.40.000201⟩. ⟨hal-01104961⟩