Fourier modal method for inverse design of metasurface-enhanced micro-LEDs
Martin F. Schubert, Alec M. Hammond
Abstract
We present a simulation capability for micro-scale light-emitting diodes ( µ LEDs) that achieves comparable accuracy to CPU-based finite-difference time-domain simulation but is more than 10 7 times faster. Our approach is based on the Fourier modal method (FMM)—which, as we demonstrate, is well suited to modeling thousands of incoherent sources—with extensions that allow rapid convergence for µ LED structures that are challenging to model with standard approaches. The speed of our method makes the inverse design of µ LEDs tractable, which we demonstrate by designing a metasurface-enhanced µ LED that doubles the light extraction efficiency of an unoptimized device.
Topics & Concepts
Light-emitting diodeOpticsFourier transformInverseModalConvergence (economics)Computer scienceDiodeInverse problemFinite-difference time-domain methodPhysicsOptoelectronicsMaterials scienceMathematicsMathematical analysisQuantum mechanicsPolymer chemistryGeometryEconomicsEconomic growthMetamaterials and Metasurfaces ApplicationsPhotonic Crystals and ApplicationsAdvanced Antenna and Metasurface Technologies