Data-driven Discovery for Robust Optimization of Semiconductor Nanowire Lasers
arxiv(2024)
Abstract
Active wavelength-scale optoelectronic components are widely used in photonic
integrated circuitry, however coherent sources of light – namely optical
lasers – remain the most challenging component to integrate. Semiconductor
nanowire lasers represent a flexible class of light source where each nanowire
is both gain material and cavity; however, strong coupling between these
properties and the performance leads to inhomogeneity across the population.
While this has been studied and optimized for individual material systems, no
architecture-wide insight is available. Here, nine nanowire laser material
systems are studied and compared using 55,516 nanowire lasers to provide
statistically robust insight into performance. These results demonstrate that,
while it may be important to optimise internal quantum efficiency for certain
materials, cavity effects are always critical. Our study provides a roadmap to
optimize the performance of nanowire lasers made from any material: this can be
achieved by ensuring a narrow spread of lengths and end-facet reflectivities.
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