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Short-wave infrared cavity resonances in a single GeSn nanowire

Youngmin Kim, Simone Assali, Hyo-Jun Joo, Sebastian Koelling, Melvina Chen, Lu Luo, Xuncheng Shi, Daniel Burt, Zoran Ikonic, Donguk Nam and Oussama Moutanabbir

Article (2023)

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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).

Subjects: 3100 Physics > 3100 Physics
Department: Department of Engineering Physics
Funders: NATURAL SCIENCES AND ENGINEERING RESEARCH COUNCIL OF CANADA (NSERC), Canada Research Chairs, Canada Foundation for Innovation, Mitacs, PRIMA Québec, Defence Canada (Innovation for Defence Excellence and Security, IDEaS), European Union’s Horizon Europe research and innovation programme, US Army Research Office, Ministry of Education, Singapore, National Research Foundation of Singapore through the Competitive Research Program, A*STAR under its Quantum Engineering Programme, iGrant of Singapore A*STAR AME IRG
Grant number: 101070700 (MIRAQLS), W911NF-22-1-0277, cRF TIER 1 (RG 115/2), AcRF TIER 2 [MOE2018-T2-2-011 (S), NRF-CRP19-2017-01, NRF2018-NRF-ANR009 TIGER, NRF2022-QEP2-02- P13, A2083c0053
PolyPublie URL: https://publications.polymtl.ca/54822/
Journal Title: Nature Communications (vol. 14, no. 1)
Publisher: Nature Research
DOI: 10.1038/s41467-023-40140-0
Official URL: https://doi.org/10.1038/s41467-023-40140-0
Date Deposited: 29 Aug 2023 15:45
Last Modified: 07 Apr 2024 21:45
Cite in APA 7: Kim, Y., Assali, S., Joo, H.-J., Koelling, S., Chen, M., Luo, L., Shi, X., Burt, D., Ikonic, Z., Nam, D., & Moutanabbir, O. (2023). Short-wave infrared cavity resonances in a single GeSn nanowire. Nature Communications, 14(1), 4393 (7 pages). https://doi.org/10.1038/s41467-023-40140-0


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