# Inverse Design of All-dielectric Parallel-Plane Mirror Resonator

## TL;DR

This paper presents an inverse design method for all-dielectric parallel-plane mirror resonators using an objective-first algorithm to achieve targeted light confinement and resonance without extensive parameter scanning.

## Contribution

It introduces a novel inverse design approach for dielectric resonators that efficiently creates structures with desired optical properties using bandgap engineering.

## Key findings

- Achieved targeted resonance at specific wavelengths.
- Designed compact structures with sub-millimeter footprints.
- Validated structures with finite-difference time-domain simulations.

## Abstract

In this study, we used parallel plane mirror resonator analogy to design all-dielectric optical resonator that is performed with the objective-first inverse design algorithm. Confinement of the light is succeeded via predefined objective function to create symmetric mirror regions for the fundamental transverse-electric polarization mode. The algorithm creates bandgap in random structure to obtain resonance peak at the desired wavelength without any intuitive scanning of the parameter space. The first order mode is confined on the cavity region at pre-defined wavelength. The obtained structure is analysed by using the two-dimensional finite-difference time-domain method. The proposed structure has a compact configuration with a footprint of $13.394 \times 0.592 \mu m^2$.

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Source: https://tomesphere.com/paper/1903.04599