Simulations & Data Engineering
Optoelectronics Engineering
FDTD Simulations for Light Extraction Optimization
The Challenge
Optimize light extraction structures for micro-LED devices.
Feature sizes close to the emission wavelength, put into question ray-trace simulation results.
The relatively large overall structure meant that FDTD modeling would require significant computational resources.
The Approach
To meet an aggressive schedule and simulate large structures, we adopted Tidy3D, a cloud-based FDTD simulation tool that allowed us to run large models with minimal upfront infrastructure investment.
Developed a validation strategy grounded in well-established reference results.
Developed a process to systematically simulate the parameter space and defined evaluation metrics to guide the optimization effort.
The Work
Began by validating the fundamental simulation approach, comparing structures and material parameters against analytical results.
Created a parametric model of the structures under consideration.
Tested the sensitivity of results to simulation parameters, such as cell size, and reduced computational cost without sacrificing accuracy.
Developed an automated process flow that accepted model parameters as inputs and generated the corresponding performance metrics.
Implemented a simulation orchestration system that iterated through model configurations, aggregated the results, and identified optimal designs.
The Impact
Enabled the client to maintain an aggressive development schedule and gain time-to-market advantage.
Delivered an optimized micro-LED light extraction design that advanced the program to a detailed design stage.
Developed a reusable optimization framework that can support future device designs and related simulation efforts.