Time-resolved four-wave-mixing spectroscopy for inner-valence transitions
Data(s) |
15/02/2016
31/12/1969
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Resumo |
Noncollinear four-wave-mixing (FWM) techniques at near-infrared (NIR), visible, and ultraviolet frequencies have been widely used to map vibrational and electronic couplings, typically in complex molecules. However, correlations between spatially localized inner-valence transitions among different sites of a molecule in the extreme ultraviolet (XUV) spectral range have not been observed yet. As an experimental step toward this goal, we perform time-resolved FWM spectroscopy with femtosecond NIR and attosecond XUV pulses. The first two pulses (XUV-NIR) coincide in time and act as coherent excitation fields, while the third pulse (NIR) acts as a probe. As a first application, we show how coupling dynamics between odd- and even-parity, inner-valence excited states of neon can be revealed using a two-dimensional spectral representation. Experimentally obtained results are found to be in good agreement with ab initio time-dependent R-matrix calculations providing the full description of multielectron interactions, as well as few-level model simulations. Future applications of this method also include site-specific probing of electronic processes in molecules. |
Identificador | |
Idioma(s) |
eng |
Direitos |
info:eu-repo/semantics/embargoedAccess |
Fonte |
Ding , T , Ott , C , Kaldun , A , Blatterman , A , Meyer , K , Stooss , V , Rebholz , M , Birk , P , Hartmann , M , Brown , A , Van Der Hart , H & Pfeifer , T 2016 , ' Time-resolved four-wave-mixing spectroscopy for inner-valence transitions ' Optics Letters , vol 41 , no. 4 , pp. 709-712 . DOI: 10.1364/OL.41.000709 |
Palavras-Chave | #Attosecond #spectroscopy #AB-INITIO #R-MATRIX METHOD |
Tipo |
article |