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Ultrafast, Tunable Nanoparticle-Array Laser Could Speed Optical Switching

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ESPOO, Finland, May 16, 2018 — Scientists combined organic dye material with metallic nanostructures (gold nanoparticles) to demonstrate ultrafast lasing with short, rapidly appearing laser pulses. Such ultrafast modulation speeds could be utilized in sensors and optical switches. The organic dye nanoparticle-array laser demonstrated more than a 100-GHz modulation bandwidth. Researchers showed that the lasing modulation speed could be tuned by the array parameters. For its experiments, the team from Aalto University placed gold nanoparticles on glass and immersed the samples in an organic, light-emitting...Read full article

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