SKM 2023 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 33: Poster II

HL 33.48: Poster

Wednesday, March 29, 2023, 17:00–19:00, P1

Simulation and fabrication of a WS₂-nanobeam cavity with a MoSe₂ monolayer as active material — •Aris Koulas-Simos¹, Bárbara Rosa¹, Chirag Palekar¹, Léo Roche¹, Yang Yuhui¹, Felix Binkowski², Sven Burger^2,3, Battulga Munkhbat⁴, and Stephan Reitzenstein¹ — ¹Institut für Festkörperphysik, Technische Universität Berlin, 10623 Berlin, Germany — ²Zuse Institute Berlin (ZIB), 14195 Berlin, Germany — ³JCMwave GmbH, D-14050 Berlin, Germany — ⁴Department of Electrical and Photonics Engineering, Technical University of Denmark, 2800 Kongens Lyngby, Denmark

Transition metal dichalcogenides (TMDCs) exhibit extraordinary optical, electrical, and mechanical properties that can be easily tailored for novel integrated photonic applications. Different TMDCs can be combined to form novel nanostructures with highly interesting complex dynamics. Here, we report on the simulation and fabrication of a WS₂-nanobeam cavity with a MoSe₂ monolayer (ML) as active material. Utilizing a FEM eigenfrequency solver, cavity simulations are performed on a 3D stripe of WS₂ with a finite periodic air hole arrangement. The calculated eigenmodes exhibit high Q-factors and tight mode confinement with mode volumes near the fundamental diffraction limit after parameter optimization. The final parameter set is employed in the fabrication process of WS₂-nanobeam cavities with a MoSe₂ ML embedded in them. This work paves further the way toward the realization of novel nanolaser devices consisting purely of TMDC materials.