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Plasmonic lasers turn magnetic

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Summary: Research has shown that active magnetic-field control over lasing can be achieved in a periodic array of Co/Pt multilayer nanodots immersed in an IR-140 dye solution, allowing for external manipulation of plasmonic nanolasers. By exploiting the magnetic nature of the nanoparticles and mode tailoring, the transition between lasing action and non-lasing emission can be controlled, showcasing a new way to modulate plasmonic lasers. This study also demonstrates how the effects of magnetization on light, typically weak, can be observed in the lasing regime, paving the way for further exploration in topological photonics.

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