Femtosecond intrapulse evolution of the magneto-optic Kerr effect in magnetoplasmonic crystals
Femtosecond intrapulse evolution of the magneto-optic Kerr effect in magnetoplasmonic crystals
复制标题
磁等离子晶体中磁光克尔效应的飞秒脉冲内演化
DOI:
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发表时间:
2014
期刊:
影响因子:
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通讯作者:
A. A. Fedyanin
中科院分区:
文献类型:
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作者:
M. Shcherbakov;P. Vabishchevich;A. Frolov;T. Dolgova;A. A. Fedyanin
Samsung R&D Institute Russia, Moscow, Russia(Dated: July 23, 2014)In magnetoplasmonics, it is possible to tailor the magneto-optical properties of nanostructuresby exciting surface plasmon polaritons (SPPs). Thus far, magnetoplasmonic effects have beenconsidered static. Here, we describe ultrafast manifestations of magnetoplasmonics by observingthe non-trivial evolution of the transverse magneto-optic Kerr effect within 45-fs pulses reflectedfrom an iron-based magnetoplasmonic crystal. The effect occurs for resonant SPP excitations,displays opposite time derivative signs for different slopes of the resonance, and is explained withthe magnetization-dependent dispersion relation of SPPs.