In this study, surface plasmon-enhanced nanolasers beyond the optical diffraction limit with different structural parameters have been designed and analyzed to optimize the surface plasmon coupling efficiency. Electric field energy can be highly confined in the ultrathin insulating region, as revealed via simulated distribution of the electric field using COMSOL Multiphysics software, resulting in an enhanced stimulated emission of radiation. Additionally, through optimizing the structural parameters, the optical performance of plasmon-enhanced nanolasers was significantly improved, with a threshold as low as ∼4 W cm −2 and a Quality (Q) factor of up to 196 under optical pumping.

中文翻译：

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基于InGaN / GaN纳米线的纳米激光中表面等离子体激元耦合效率的优化

在这项研究中，已经设计并分析了具有不同结构参数的超出光学衍射极限的表面等离子体激元增强的纳米激光，以优化表面​​等离子体激元的耦合效率。通过使用COMSOL Multiphysics软件对电场进行模拟分布可以发现，电场能量可以高度限制在超薄绝缘区内，从而增强了受激辐射的发射。另外，通过优化结构参数，等离子体增强的纳米激光的光学性能得到了显着改善，在光泵浦下其阈值低至约4 W cm -2且质量（Q）因子高达196。