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Controlled coupling of a single nanoparticle in polymeric microstructure by low one-photon absorption - based direct laser writing technique

Mai Trang Do, Dam Thuy Trang Nguyen, Hoang Minh Ngo, Isabelle Ledoux-Rak, and Ngoc Diep Lai, Nanotechnology 26, 105301 (2015)

We investigated the coupling of a single nanoparticle (NP) into a polymer-based photonic structure (PS). The low one-photon absorption microscopy with a two-step technique allowed us first to accurately determine the location of a NP and then to embed it as desired into an arbitrary PS. The coupling of a gold NP and a polymer-based PS was experimentally investigated showing a six-fold photon collection enhancement as compared to that of a NP in unpatterned film. The simulation results based on finite-difference time-domain calculation method confirmed this observation and showed a 2.86-fold enhancement in extraction efficiency thanks to the NP/PS coupling.

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