Abstract
The development of ultimate microcavity lasers requires precise engineering of the gain medium. Of particular interest are microlasers based on discrete gain centers, which are aligned to the field maximum of the cavity mode to maximize the modal gain. Here, we report on micropillar lasers with a gain medium composed of site-controlled quantum dots (SCQDs). Adjusting the size of a buried stressor, we define the number of high-quality SCQDs located at the antinode of the fundamental cavity mode. Our deterministic nanoprocessing platform allows us to tightly control the emission properties of high-β microlasers operating in the few-QD regime.
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