High-Performance Optical Power Limiting Filters at Telecommunication Wavelengths: When Aza-BODIPY Dyes Bond to Sol-Gel Materials
Résumé
An optical power limiter (OPL) device can change its optical properties depending on the input light intensity: it is ideally transparent at low incident power and presents a decrease in transmission when the incident intensity increases. This phenomenon can be used for protection of optical sensors. This paper presents the design of a functionalized aza-BODIPY chromophore, combining good nonlinear two-photon absorption and exited-state absorption in the short-wave infrared range (1300-1600 nm). The aza-BODIPY chromophores also show excellent thermal and photochemical stabilities. Their covalent grafting to a sol-gel matrix leads to the formation of class II sol-gel materials that allows for extraordinary doping concentrations of up to 280 mol·L-1 (40 wt %), which results in highly efficient OPL performances at 1550 nm. © 2020 American Chemical Society.
Domaines
Chimie| Origine | Fichiers produits par l'(les) auteur(s) |
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