<b>Bayesian Optimized Design for O-band </b><b>Bottom-up Grown Microring Lasers</b>

<h2>Datasets for<b> "</b><b><i>Bayesian Optimized Design for O-band </i></b><b><i>Bottom-up Grown Microring Lasers</i></b><b>"</b></h2><p dir="ltr">These datasets support the multi-objective Bayesian optimization (MOBO) of bottom-up grown InP/InAsP multi-quantum well (MQW) microring lasers. The optimization focuses on three key objectives: minimizing the lasing threshold, targeting O-band lasing wavelengths, and maximizing yield. They include microring growth and geometry parameters, performance metrics, and power-dependent photoluminescence (PL) spectroscopy data. The datasets are organized into three components: (1) the training dataset, (2) the optimized and Design of Experiments (DoE) dataset, and (3) the remeasurement dataset.</p><h2>1. Model Training Dataset</h2><p dir="ltr"><b>File</b>: '<code>Training_Dataset.pkl'</code><br>This dataset was used to train the surrogate model used in the optimization process.</p><p dir="ltr"><br></p><h3><b>Contents</b>:</h3><h4><b>Growth Parameters</b>:</h4><ul><li>Number of quantum wells </li><li>Quantum well growth temperature</li><li>As/P ratio (estimated from precursor flow rates in the vapor phase)</li><li>V/III ratio during InP barrier growth</li><li>Capping layer growth duration</li></ul><h4><b>Geometry Parameters</b>:</h4><ul><li>MQW Microring diameter</li><li>Pitch (center-to-center spacing between MQW microrings)</li></ul><h4><b>Performance Metrics</b>:</h4><ul><li><b>Median lasing threshold</b> across a field (a group of nominally identical MQW microrings)</li><li><b>Median lasing wavelength </b>across a field</li><li><b>Yield</b>: Ratio of lasing MQW microrings to total MQW microrings in the field</li></ul><h4><b>Associated Data</b>:</h4><ul><li>Lasing threshold and wavelength values were derived from power-dependent PL spectroscopy.</li><li>Power-dependent PL spectroscopy data: '<code>Training_pdep.h5'</code></li><li>Metadata (e.g., experimental conditions, instrument settings): '<code>settings_training.h5'</code></li></ul><h2>2. Optimized and DoE Dataset</h2><p dir="ltr"><b>File</b>: '<code>Opt_&_DoE_Dataset.pkl'</code><br>This dataset contains measurements from MQW microring structures designed through two approaches: MOBO and a structured DoE strategy.</p><p dir="ltr"><br></p><h3><b>Contents</b>:</h3><h4><b>Growth and Geometry Parameters</b>:</h4><ul><li>Same structure and format as in the training dataset</li></ul><h4><b>Performance Metrics</b>:</h4><ul><li>Identical to those in the training dataset.</li></ul><h4><b>Associated Data</b>:</h4><ul><li>Power-dependent PL spectroscopy data: '<code>Opt_&_DoE_pdep.h5'</code></li><li>Metadata (e.g., experimental conditions): '<code>settings_Opt_DoE_remeasurements.h5'</code></li></ul><h2>3. Remeasurement Dataset</h2><p dir="ltr">This dataset includes remeasurements of the best-performing MQW microring sample from the training dataset. These remeasurements serve to validate the consistency and reproducibility of lasing threshold and wavelength performance under updated experimental conditions.</p><h3><b>Files</b>:</h3><ul><li><code>'remeasured_pdep.h5'</code>: Power-dependent PL spectroscopy data</li><li><code>'remeasured_sample_D.pkl'</code>: Summary of lasing threshold, wavelength and yield</li><li><code>'settings_Opt_DoE_remeasurements.h5'</code>: Metadata<br></li></ul><p dir="ltr">Simultaneous improvements in all three performance metrics were observed in the optimized MQW microring lasers, validating the effectiveness of the MOBO framework.</p>