Probing the Fluctuations of Optical Properties in Time-Resolved Spectroscopy.

Probing the Fluctuations of Optical Properties in Time-Resolved Spectroscopy.
复制标题

探索时间分辨光谱中光学性质的波动。

DOI:
--
复制
发表时间:
2017
影响因子:
8.6
通讯作者:
M. Eckstein
M. Eckstein
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
F. Randi;M. Esposito;F. Giusti;O. Misochko;F. Parmigiani;D. Fausti;M. Eckstein

文献摘要

参考文献

被引文献

相似文献

我们表明,在光学泵浦-探测实验中的大块样品,超短光脉冲与非平衡复杂材料相互作用后的强度的统计分布可以用来测量系统中的电流的时间相关的噪声。我们说明了一般的参数为光激发的Peierls材料。瞬态噪声光谱使我们能够测量电子自由度动态遵守波动耗散定理的程度,以及它们在相干晶格振动过程中的热化程度。这里提出的统计测量提供了一个新的一般框架来检索非平衡实验中激发分布的动力学信息,它可以扩展到其他自由度的磁或振动起源。
We show that, in optical pump-probe experiments on bulk samples, the statistical distribution of the intensity of ultrashort light pulses after interaction with a nonequilibrium complex material can be used to measure the time-dependent noise of the current in the system. We illustrate the general arguments for a photoexcited Peierls material. The transient noise spectroscopy allows us to measure to what extent electronic degrees of freedom dynamically obey the fluctuation-dissipation theorem, and how well they thermalize during the coherent lattice vibrations. The proposed statistical measurement developed here provides a new general framework to retrieve dynamical information on the excited distributions in nonequilibrium experiments, which could be extended to other degrees of freedom of magnetic or vibrational origin.
DOI: 10.1038/nature21024
发表时间: 2017-01-19
期刊: NATURE
影响因子: 64.8
作者:
Riek, C.;Sulzer, P.;Leitenstorfer, A.
通讯作者: Leitenstorfer, A.