Theory and experiment of coherent wave packet dynamics in rare earth solids: Absorption spectrum vs femtosecond fringe-resolved interferogram

Q.Luo; D.C.Dai; G.Q.Wang; V.Ninulescu; X.Y.Yu; L.Luo; J.Y.Zhou; YiJing Yan

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Theory and experiment of coherent wave packet dynamics in rare earth solids: Absorption spectrum vs femtosecond fringe-resolved interferogram

机译：稀土固体中相干波包动力学的理论和实验：吸收光谱与飞秒条纹分辨干涉图

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Coherent dynamic property of neodymium yttrium aluminum garnet (Nd:YAG) crystal at 77 K is studied via the conventional absorption, the femtosecond fringe-resolved wave packet interferometry, and the related difference-phase spectrum. The recorded interferogram exhibits beatings in subpicosecond time scale arising from the interferences among various weakly split 4f-electronic states and the coupled vibronic optical phonon sidebands. The electron-phonon coupling in Nd:YAG can be well described by multiple Brownian oscillators model involving in each individual electronic transition. The parameters for characterizing material coherence and relaxation are determined vai the theoretical modelings of both the frequency and the tim-domain experimental signals.

机译：通过常规吸收，飞秒条纹分辨波包干涉法和相关的相差谱，研究了钕钇铝石榴石（Nd：YAG）晶体在77 K时的相干动态特性。记录的干涉图表现出亚皮秒级的跳动，这是由各种弱分裂的4f电子状态和耦合的振动电子声子边带之间的干扰引起的。 Nd：YAG中的电子-声子耦合可以通过涉及每个单独电子跃迁的多个布朗振荡器模型很好地描述。通过频率和时域实验信号的理论模型确定表征材料相干和弛豫的参数。

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《The Journal of Chemical Physics》 |2001年第4期|共6页
作者
Q.Luo; D.C.Dai; G.Q.Wang; V.Ninulescu; X.Y.Yu; L.Luo; J.Y.Zhou; YiJing Yan;
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1. Theory and experiment of coherent wave packet dynamics in rare earth solids: Absorption spectrum vs femtosecond fringe-resolved interferogram [J] . Q.Luo, D.C.Dai, G.Q.Wang, The Journal of Chemical Physics . 2001,第4期

机译：稀土固体中相干波包动力学的理论和实验：吸收光谱与飞秒条纹分辨干涉图
2. Dynamic-Absorption Spectral Contours: Vibrational Phase-Dependent Resolution of Low-Frequency Coherent Wave-Packet Motion of IR144 on the Ground-State and Excited-State π → π~* Surfaces [J] . Elizabeth A. Carson, William M. Diffey, Katherine R. Shelly, The journal of physical chemistry, A. Molecules, spectroscopy, kinetics, environment, & general theory . 2004,第9期

机译：动态吸收光谱轮廓：IR144在基态和激发态π→π〜*表面上的低频相干波包运动的振动相位相关分辨率
3. Wave packet theory of dynamic stimulated Raman spectra in femtosecond pump-probe spectroscopy [J] . Sun ZG, Jin ZQ, Lu J, The Journal of Chemical Physics . 2007,第17期

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Theory and experiment of coherent wave packet dynamics in rare earth solids: Absorption spectrum vs femtosecond fringe-resolved interferogram

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