Optics in 2D-Materials

The Junior Research Group "Optics in 2D-Materials" is dedicated to the understanding of light-matter-interaction in atomically thin layers of nanomaterials, to the tailoring of their optical response, and to leverage their properties for applications in photonics. It is particularly focused on transition-metal dichalcogenides (TMDs), which naturally form mono-molecular and semiconducting sheets thinner than a nanometer but with an enormous degree of optical activity. These effects are driven by their unusual geometry: electrons can move quite freely within the layer but are confined in the vertical direction.

Their extreme electro-optical properties and miniscule size make them ideal workhorses for fundamental investigations in the nano- and quantum-photonic realm. Fundamental effects such as fluorescence, nonlinear interaction or the emission of quantum states of light have been observed for TMDs. Their dependence on the electronic and photonic properties of their environment and their femtosecond dynamics remain, however, largely unexplored.

TMDs are also interesting candidates for a plethora of applications in photonics, ranging from microscopy over novel kinds of photonic components all the way to quantum light sources. The BMBF-funded junior research group "NanoScopeFutur-2D", led by Falk Eilenberger, aims to explore such applications, investigate fabrication routes, and demonstrate their usage for real-world application scenarios.

Eilenberger 2D_web700
An example of a 2D transition-metal dichalcogenide (TMD) on a glass substrate.

>> link to the Eilenberger Group