Integration of atomically thin layers of transition metal dichalcogenides into high-Q, monolithic Bragg-cavities: An experimental platform for the enhancement of the optical interaction in 2D-materials

Knopf H, Lundt N, Bucher T, Hoefling S, Tongay S, Taniguchi T, Watanabe K, Staude I, Schulz U, Schneider C, Eilenberger F (2019)

Publication Type: Journal article

Publication year: 2019

Journal

Optical Materials Express Optical Society of America

Book Volume: 9

Pages Range: 598-610

Journal Issue: 2

DOI: 10.1364/OME.9.000598

Abstract

We demonstrate a new approach to integrate single layer MoSe 2 and WSe 2 flakes into monolithic all-dielectric planar high-quality micro-cavities. These distributed-Braggreflector (DBR) cavities may, e.g., be tuned to match the exciton resonance of the 2Dmaterials. 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 a SiO 2 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.

Involved external institutions

Friedrich-Schiller-Universität Jena DE Germany (DE) Julius-Maximilians-Universität Würzburg DE Germany (DE) Arizona State University (ASU) US United States (USA) (US) National Institute of Materials Science (NIMS) JP Japan (JP) Fraunhofer-Institut für Angewandte Optik und Feinmechanik (IOF) / Fraunhofer Institute for Applied Optics and Precision Engineering DE Germany (DE)

How to cite

APA:

Knopf, H., Lundt, N., Bucher, T., Hoefling, S., Tongay, S., Taniguchi, T.,... Eilenberger, F. (2019). Integration of atomically thin layers of transition metal dichalcogenides into high-Q, monolithic Bragg-cavities: An experimental platform for the enhancement of the optical interaction in 2D-materials. Optical Materials Express, 9(2), 598-610. https://dx.doi.org/10.1364/OME.9.000598

MLA:

Knopf, Heiko, et al. "Integration of atomically thin layers of transition metal dichalcogenides into high-Q, monolithic Bragg-cavities: An experimental platform for the enhancement of the optical interaction in 2D-materials." Optical Materials Express 9.2 (2019): 598-610.

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