title: Hybrid integrated optical waveguides in glass for enhanced visible photoluminescence of nanoemitters.
abstract: Integrated optical devices able to control light-matter interactions on the nanoscale have attracted the attention of the scientific community in recent years. However, most of these devices are based on silicon waveguides, limiting their use for telecommunication wavelengths. In this contribution, we propose an integrated device that operates with light in the visible spectrum. The proposed device is a hybrid structure consisting of a high-refractive-index layer placed on top of an ion-exchanged glass waveguide. We demonstrate that this hybrid structure serves as an efficient light coupler for the excitation of nanoemitters. The numerical and experimental results show that the device can enhance the electromagnetic field confinement up to 11 times, allowing a higher photoluminescence signal from nanocrystals placed on its surface. The designed device opens new perspectives in the generation of new optical devices suitable for quantum information or for optical sensing.
authors.forename: Josslyn
authors.initials: J
authors.lastname: Beltran Madrigal
authors.forename: Ricardo
authors.initials: R
authors.lastname: Tellez-Limon
authors.forename: Florent
authors.initials: F
authors.lastname: Gardillou
authors.forename: Denis
authors.initials: D
authors.lastname: Barbier
authors.forename: Wei
authors.initials: W
authors.lastname: Geng
authors.forename: Christophe
authors.initials: C
authors.lastname: Couteau
authors.forename: Rafael
authors.initials: R
authors.lastname: Salas-Montiel
authors.forename: Sylvain
authors.initials: S
authors.lastname: Blaize