Project Details
Projekt
Tailoring diffusive transport of light
Applicant
Professor Dr. Martin Wegener
Subject Area
Experimental Condensed Matter Physics
Term
from 2015 to 2022
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 277706343
A large part of the field of linear optics & photonics aims at achieving specific functions of optical systems and devices by molding the flow of light. In ballistic optics in ordered systems, this task is routinely accomplished by tailoring spatial distributions of the refractive index (tensor). In this project, we tackle this task for diffuse optics in disordered systems by designing and realizing tailored spatially graded, locally random disorder, i.e., by tailored spatial distributions of the light diffusivity (tensor). Our plans for the second three-year funding period comprise three objectives, 1) - 3). The first two objectives aim at fundamental science aspects, the third objective aims at getting closer to real-world applications. We will perform the work on objective 3) in collaboration with the groups of Uli Lemmer and Guillaume Gomard within this DFG-SPP 1839 program. This collaboration has led to two publications within the first three years of this project.1) Realize experimentally a multi-layer laminated invisibility cloak in the diffusive regime of light propagation that also works under transient illumination conditions. This objective follows a previous theoretical prediction by a Spanish group.2) Investigate the role of open and closed eigen-channels in invisibility cloaking structures experimentally. A pre-requisite for this objective is the realization of more long-term stable structures. Here, we plan a collaboration with the group of Wonshik Choi in South Korea.3) Work towards 3D laser micro-printed tailored disordered structures for molding the flow of diffuse light. 3D printing brings the ideas of this project closer to real-world applications. As a model example, we will realize cloaked contacts on OLEDs.
DFG Programme
Priority Programmes
