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arXiv 2301.05035physics.optics
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纳米复合材料中瞬态等离子体共振原位可调谐近紫外光脉冲

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

摘要:

我们提出了一个新的概念,产生超短脉冲的基础上瞬态等离子体共振纳米复合材料。光致电离和自由载流子等离子体在几飞秒尺度上改变纳米颗粒的磁化率。这导致当系统处于等离子体共振时在泵浦脉冲持续时间期间的窄时间窗,伴随着局部场的短突发。在此过程中,产生频率可调谐的几fs脉冲。我们阐明了上述机制的细节,并调查不同的贡献过程的影响。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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