Double-heterostructure cavities: from theory to design

TL;DR

This paper introduces a frequency-domain approach to analyze and design double-heterostructure cavities, enabling precise control over their radiation patterns and quality factors for improved optical device performance.

Contribution

It develops a semi-analytic method linking cavity geometry to radiation patterns, facilitating the design of ultrahigh-Q DHCs with vertical emission.

Findings

Accurate computation of quality factors and radiation patterns.

Design guidelines for ultrahigh-Q cavities with vertical emission.

General relationship between cavity geometry and radiation pattern.

Abstract

We derive a frequency-domain-based approach for radiation (FAR) from double-heterostructure cavity (DHC) modes. We use this to compute the quality factors and radiation patterns of DHC modes. The semi-analytic nature of our method enables us to provide a general relationship between the radiation pattern of the cavity and its geometry. We use this to provide general designs for ultrahigh quality factor DHCs with radiation patterns that are engineered to emit vertically.