Randomly Distributed Fabry-Perot-type Metal Nanowire Resonators and Their Lasing Action

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Optical feedback mechanisms are often obtained from well-defined resonator structures fabricated by top-down processes. Here, we demonstrate that two-dimensional networks of metallic nanowires dispersed on the semiconductor slab can provide strong in-plane optical feedback and, thus, form randomly-distributed Fabry-Perot-type resonators that can achieve multi-or single-mode lasing action in the near infrared wavelengths. Albeit with their subwavelength-scale cross-sections and uncontrolled inter-nanowire distances, a cluster of nearly parallel metal nanowires acts as an effective in-situ reflector for the semiconductor-metal slab waveguide modes for coherent optical feedback in the lateral direction. Fabry-Perot type resonance can be readily developed by a pair of such clusters coincidentally formed in the solution-processed random nanowire network. Our low-cost and large-area approach for opportunistic random cavity formation would open a new pathway for integrated planar light sources for low-coherence imaging and sensing applications
Publisher
NATURE PUBLISHING GROUP
Issue Date
2016-04
Language
English
Article Type
Article
Citation

SCIENTIFIC REPORTS, v.6

ISSN
2045-2322
DOI
10.1038/srep24898
URI
http://hdl.handle.net/10203/209746
Appears in Collection
EE-Journal Papers(저널논문)
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