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arXiv · 2301.05035

Tunable in situ Near-UV Pulses by Transient Plasmonic Resonance in Nanocomposites

Anton Husakou·Ihar Babushkin·Olga Fedotova·Ryhor Rusetsky·Oleg Khasanov·Tatsiana Smirnova·Alexander Fedotov·Usman Sapaev·Tzveta Apostolova
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Abstract

We propose a new concept for generation of ultrashort pulses based on transient plasmonic resonance in nanoparticle composites. Photoionization and free-carriers plasma change the susceptibility of nanoparticles on a few-femtosecond scale. This results in a narrow time window during the pump pulse duration when the system is in plasmonic resonance, accompanied by a short burst of the local field. During this process, frequency-tunable few-fs pulses are generated. We elucidate the details of the above mechanism, and investigate the influences of different contributing processes.

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Anton Husakou, Ihar Babushkin, Olga Fedotova, Ryhor Rusetsky, Oleg Khasanov, Tatsiana Smirnova, Alexander Fedotov, Usman Sapaev, Tzveta Apostolova. 2023-01-12. Tunable in situ Near-UV Pulses by Transient Plasmonic Resonance in Nanocomposites. https://arxiv.org/abs/2301.05035

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