This study presents a systematic investigation of whispering gallery mode (WGM) lasing in quantum dot micropillar cavities, analyzing how optical properties depend on pillar diameter. To describe the experimental data and understand the underlying physics, the authors performed numerical simulations based on the finite element method (FEM) using the JCMsuite solver. The simulations modeled the WGM properties, including realistic loss channels like sidewall scattering and material absorption, enabling a detailed comparison with measured lasing thresholds, quality factors, and free spectral ranges.
I. Limame, et al. Diameter-dependent whispering gallery mode lasing effects in quantum dot micropillar cavities. Opt. Express, 32, 31819 (2024).
DOI: 10.1364/OE.529679