Controlling and generating coherent light fields in the nanoscale is critical for reducing the size of photonic circuitry. There are several demonstrations of zero-, one-, two-, and three-dimensional nanolaser architectures. Here we experimentally demonstrate a one-dimensional plasmonic laser, which consists of a periodic chain of aluminum nanoparticles and organic gain media. Lasing is observed at visible wavelengths, with clear thresholds and line widths down to 0.11 nm. Lasing occurs in a dark mode that extends over the whole structure, even outside the pumped area. The single lithography step fabrication and one-dimensional character allow for easy integration of these laser sources with other plasmonic structures.

中文翻译：

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一维等离子纳米粒子链激光器

控制和产生纳米级的相干光场对于减小光子电路的尺寸至关重要。有零维，一维，二维和三维纳米激光体系结构的一些演示。在这里，我们通过实验证明了一维等离子激元激光器，该激光器由铝纳米颗粒和有机增益介质的周期性链组成。在可见光波长观察到激光发射，具有清晰的阈值和低至0.11 nm的线宽。激射发生在黑暗模式下，该模式在整个结构上延伸，甚至在泵浦区域之外。单次光刻步骤制造和一维特性可轻松将这些激光源与其他等离子体结构集成在一起。