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Article Dans Une Revue Photonics research Année : 2020

Towards the integration of nanoemitters by direct laser writing on optical glass waveguides

Résumé

A major challenge towards nanophotonics is the integration of nanoemitters on optical chips. Combining the optical properties of nanoemitters with the benefits of integration and scalability of integrated optics is still a major issue to overcome. In this work, we demonstrate the integration of nanoemitters positioned in a controlled manner onto a substrate and onto an optical ion-exchanged glass waveguide via direct laser writing based on two-photon polymerization. Our nanoemitters are colloidal CdSe/ZnS quantum dots (QDs) embedded in polymeric nanostructures. By varying the laser parameters during the patterning process, we make size-controlled QD-polymer nanostructures that were systematically characterized using optical and structural methods. Structures as small as 17 nm in height were fabricated. The well-controlled QD-polymer nanostructure systems were then successfully integrated onto a new photonic platform for nanophotonics made of an ion-exchanged waveguide. We show that our QDs maintain their light emitting quality after integration as verified by photoluminescence (PL) measurements. Ultimately, QD emission coupled to our waveguides is detected through a home-built fiber-edge coupling PL measurement setup. Our results show the potential for future integration of nanoemitters onto complex photonic chips.
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Dates et versions

hal-02949223 , version 1 (25-09-2020)

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Xiaolun Xu, Aurélie Broussier, Tiziana Ritacco, Mackrine Nahra, Fabien Geoffray, et al.. Towards the integration of nanoemitters by direct laser writing on optical glass waveguides. Photonics research, 2020, 8 (9), pp.1541. ⟨10.1364/PRJ.392706⟩. ⟨hal-02949223⟩
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