从时间分辨太赫兹实验中获取磁化率。

Retrieving the susceptibility from time-resolved terahertz experiments.

作者信息

Schins J M, Hendry E, Bonn M, Muller H G

机构信息

Opto-Electronic Materials Section, DelftChem Tech, Delft University of Technology, Julianalaan 136, 2628 BL Delft, The Netherlands.

出版信息

J Chem Phys. 2007 Sep 7;127(9):094308. doi: 10.1063/1.2761915.

DOI:10.1063/1.2761915

PMID:17824740

Abstract

We present an analytical expression for the observed signal in time- and phase-resolved pump-probe studies, with particular emphasis on terahertz time-domain spectroscopy. Maxwell's equations are solved for the response of damped, harmonic oscillators to a driving probe field in the perturbative regime. Our analytical expressions agree with the one previously reported in the literature [Nemec et al., J. Chem. Phys. 122, 104503 (2005)] in the Drude limit; however, they differ in the case of a vibrational resonance.

摘要

我们给出了时间分辨和相位分辨泵浦-探测研究中观测信号的解析表达式，特别着重于太赫兹时域光谱学。在微扰区域，针对阻尼谐振子对驱动探测场的响应求解了麦克斯韦方程组。我们的解析表达式在德鲁德极限下与文献[Nemec等人，《化学物理杂志》122, 104503 (2005)]中先前报道的表达式一致；然而，在振动共振的情况下它们有所不同。