Abstract：
:Ultralow threshold nanolasers have been sought after as power efficient light sources in photonic integrated circuits. Here a single-cell nanobeam laser with a nanoisland quantum well is proposed and demonstrated. Continuous operation at 1.5 μm is achieved at room temperature with an ultralow lasing threshold of 210 nW in absorbed power. The size of the active medium is reduced to 0.7 × 0.25 × 0.02 μm(3) by removing the absorptive quantum well region surrounding the central cavity. Relatively thick (420 nm) InP slabs are employed to improve the thermal and mechanical characteristics. The nanoisland-based structures will provide a new platform to engineer fundamental light-matter interactions by controlling the size and the location of the nanoemitters, allowing the realization of highly efficient nanophotonic devices.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Jang H,Karnadi I,Pramudita P,Song JH,Kim KS,Lee YHdoi
10.1038/ncomms9276subject
Has Abstractpub_date
2015-09-22 00:00:00pages
8276issn
2041-1723pii
ncomms9276journal_volume
6pub_type
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