Thermally activated resonant grating using a vanadium dioxide waveguide - Institut d'Optique Graduate School Accéder directement au contenu
Article Dans Une Revue Optical Materials Express Année : 2021

Thermally activated resonant grating using a vanadium dioxide waveguide

I. Verrier
S. Reynaud
F. Bourquard
D. Jamon

Résumé

In this work, we report on the design of a one-dimensional subwavelength resonant grating comprised of a fused silica substrate and a bi-layer waveguide, consisting of a solgel synthetized anatase TiO 2 layer followed by a thin VO 2 layer that is applied using pulsed laser deposition and rapid thermal annealing. A TE waveguide mode is excited under normal incidence in the VO 2 /TiO 2 bi-layer via a positive photoresist based grating printed on top, leading to high resonant reflection at room temperature. Increasing the temperature to about 68°C causes the VO 2 to undergo a dielectric to metallic transition accompanied by optical modifications in the IR region, canceling the resonance effect. This thermally triggered absorber/emitter tunable configuration enabling the on and off switching of optical resonant excitation in a reversible manner is proposed for passive Q-switching self-protecting devices for high power lasers in the IR wavelength range. Modeling of the optimized temperature dependent resonant waveguide and preliminary experimental results are presented.
Fichier principal
Vignette du fichier
ome-11-4-1093.pdf (4.4 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-03191044 , version 1 (06-04-2021)

Identifiants

Citer

E. K Koussi, I. Verrier, T. Kämpfe, S. Reynaud, F. Bourquard, et al.. Thermally activated resonant grating using a vanadium dioxide waveguide. Optical Materials Express, 2021, 11 (4), pp.1093. ⟨10.1364/ome.413373⟩. ⟨hal-03191044⟩
32 Consultations
47 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More