ArticleNature communications2023
Short-wave infrared cavity resonances in a single GeSn nanowire.
Article in Nature communications, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Mid-infrared group IV nanowire laser.Science advances · 2025Article
- The indirect L-valleys splitting inductive optical gain variation ofScientific reports · 2025Article
- Observation of ultraviolet photothermoelectric bipolar impulse in gallium-based heterostructure nanowires.Nature communications · 2025Article
- Direct bandgap quantum wells in hexagonal Silicon Germanium.Nature communications · 2024Article
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Authors and funding
11 authors.
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Abstract
Nanowires are promising platforms for realizing ultra-compact light sources for photonic integrated circuits. In contrast to impressive progress on light confinement and stimulated emission in III-V and II-VI semiconductor nanowires, there has been no experimental demonstration showing the potential to achieve strong cavity effects in a bottom-up grown single group-IV nanowire, which is a prerequisite for realizing silicon-compatible infrared nanolasers. Herein, we address this limitation and present an experimental observation of cavity-enhanced strong photoluminescence from a single Ge/GeSn core/shell nanowire. A sufficiently large Sn content ( ~ 10 at%) in the GeSn shell leads to a direct bandgap gain medium, allowing a strong reduction in material loss upon optical pumping. Efficient optical confinement in a single nanowire enables many round trips of emitted photons between two facets of a nanowire, achieving a narrow width of 3.3 nm. Our demonstration opens new possibilities for ultrasmall on-chip light sources towards realizing photonic-integrated circuits in the underexplored range of short-wave infrared (SWIR).
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