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arXiv 2103.01117physics.opticscond-mat.mes-hallcond-mat.softphysics.app-ph
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WS2单分子层与等离子体纳米线-镜腔耦合的定向发射

Directional emission from WS2 monolayer coupled to plasmonic Nanowire-on-Mirror Cavity

Shailendra K. Chaubey, Gokul M. A., Diptabrata Paul, Sunny Tiwari, Atikur Rahman, G. V. Pavan Kumar

摘要:

通过将二维过渡金属二硫族化物耦合到等离子体纳米腔中来影响二维过渡金属二硫族化物激子发射特性的光谱和方向特性已经成为二维材料纳米光子学的重要前景。在本文中,我们实验研究了定向光致发光发射二硫化钨(WS 2)单层夹在单晶等离子体银纳米线(AgNW)波导和金(Au)镜,从而形成一个AgNW-WS 2-Au腔。通过采用偏振分辨傅立叶平面光学显微镜,我们量化的AgNW-WS 2-Au腔的远端的定向发射特性。考虑到我们的几何形状同时有利于局部场增强和波导能力,我们设想其在基于2D材料的片上纳米光子信号处理中的实用性,包括非线性和量子光学制度。

英文摘要:

Influencing spectral and directional features of exciton emission characteristics from 2D transition metal dichalcogenides by coupling it to plasmonic nano-cavities has emerged as an important prospect in nanophotonics of 2D materials. In this paper we experimentally study the directional photoluminescence emission from Tungsten disulfide (WS2) monolayer sandwiched between a single-crystalline plasmonic silver nanowire (AgNW) waveguide and a gold (Au) mirror, thus forming an AgNW-WS2-Au cavity. By employing polarization-resolved Fourier plane optical microscopy, we quantify the directional emission characteristics from the distal end of the AgNW-WS2-Au cavity. Given that our geometry simultaneously facilitates local field enhancement and waveguiding capability, we envisage its utility in 2D material-based, on-chip nanophotonic signal processing, including nonlinear and quantum optical regimes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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