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:
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发表时间:
2017
影响因子:
8.6
通讯作者:
M. Eckstein
中科院分区:
文献类型:
--
作者:
F. Randi;M. Esposito;F. Giusti;O. Misochko;F. Parmigiani;D. Fausti;M. Eckstein
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.
影响因子:
64.8
作者:
Riek, C.;Sulzer, P.;Leitenstorfer, A.
通讯作者:
Leitenstorfer, A.