نبذة مختصرة : International audience ; We demonstrate room-temperature electrically pumped lasing from VCSELs grown on Ge(100) and Si(100). A two-step epitaxy using MOVPE buffers and MBE-grown VCSEL structures yields low-defect high-quality AlGaAs DBRs and active regions, monitored in-situ for precise growth control, showing good performance and scalable silicon platform integration.
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