Realization of an atomically thin mirror using monolayer MoSe2

Abstract

Advent of new materials such as van der Waals heterostructures, propels new research directions in condensed matter physics and enables development of novel devices with unique functionalities. Here, we show experimentally that a monolayer of MoSe2 embedded in a charge controlled heterostructure can be used to realize an electrically tunable atomically-thin mirror, that effects 90% extinction of an incident field that is resonant with its exciton transition. The corresponding maximum reflection coefficient of 45% is only limited by the ratio of the radiative decay rate to the linewidth of exciton transition and is independent of incident light intensity up to 400 Watts/cm2. We demonstrate that the reflectivity of the mirror can be drastically modified by applying a gate voltage that modifies the monolayer charge density. Our findings could find applications ranging from fast programmable spatial light modulators to suspended ultra-light mirrors for optomechanical devices.

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• Photon-mediated interactions between distant artificial atoms
• Fast pick up technique for high quality heterostructures of bilayer graphene and hexagonal boron nitride
• Cooperative resonances in light scattering from two-dimensional atomic arrays
• Probing the influence of dielectric environment on excitons in monolayer WSe2: Insight from high magnetic fields
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Cited by in corpus (2)

• Cavity Quantum Electrodynamics with Frequency-Dependent Reflectors
• Strong radiative interactions and subradiance in disordered metamaterials