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Plasmonic lattice lasers
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DOI：10.1038/s41578-025-00803-4.png)
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摘要
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Plasmonic lattice lasers offer a promising alternative to compact sources such as vertical-cavity surface-emitting lasers. These lasers have an open-cavity design consisting of periodic lattices of metallic nanoparticles that facilitate integration with both liquid-state and solid-state gain nanomaterials. Recent advances have enabled real-time control over lasing wavelength, tunable multimodal lasing, and design of complex polarization and intensity profiles. In this Review, we summarize key developments in plasmonic lattice lasers over the past 5 years, with a focus on unconventional lattice cavities and how they can facilitate tailored lasing characteristics. We discuss strategies for realizing multicolour and multidirectional emission, the advantages of different gain materials and the challenges of reducing lasing thresholds. Although substantial progress has been made, open questions regarding fabrication precision, threshold engineering and the realization of electrically driven plasmonic lasers remain. Plasmonic lattice lasers are poised to play a critical part in next-generation technologies for optical communication, sensing and quantum applications. Plasmonic nanoparticle lattices can function as optical cavities with unique properties for next-generation nanolasers. This Review describes how plasmonic lattice lasers can exhibit tailorable emission wavelength, polarization and directionality by judicious selection of gain nanomaterials, lattice symmetries and nanoparticle compositions.
