2018/12/03 by Heiko Knopf, Knopf, Heiko, Nils Lundt +20
Engineering · Materials Science · Physics and Astronomy · #2D Materials and Applications #Applied Physics (physics.app-ph) #FOS: Physical sciences #Gas Sensing Nanomaterials and Sensors #Graphene research and applications #Nanowire Synthesis and Applications #Optics (physics.optics) #physics.app-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.1812.00634
arxiv created 2018/12/05 · arxiv updated 2018/12/06 · openalex created_date 2022/08/01 · openalex publication_date 2023/11/30 · openalex updated_date 2026/07/14
We demonstrate a new approach to integrate single layer MoSeR2R and WSeR2R flakes into monolithic all-dielectric planar high-quality micro-cavities. These distributed-Bragg-reflector (DBR) cavities may e.g. be tuned to match the exciton resonance of the 2D-materials. They are highly robust and compatible with cryogenic and room-temperature operation. The integration is achieved by a customized ion-assisted physical vapor deposition technique, which does not degrade the optical properties of the 2D-materials. The monolithic 2D resonator is shown to have a high Q-factor in excess of 4500. We use photoluminescence (PL) experiments to demonstrate that the coating procedure with an SiO2 coating on a prepared surface does not significantly alter the electrooptical properties of the 2D-materials. Moreover, we observe a resonance induced modification of the PL-spectrum for the DBR embedded flake. Our system thus represents a versatile platform to resonantly enhance and tailor light-matter-interaction in 2D-materials. The gentle processing conditions would also allow the integration of other sensitive materials into these highly resonant structures.