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arXiv · 1503.01693

Analysis of interference in attosecond transient absorption in adiabatic condition

Wenpu Dong·Yongqiang Li·Xiaowei Wang·Jianmin Yuan·Zengxiu Zhao
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Abstract

We simulate the transient absorption of attosecond pulses of infrared-laser-dressed atoms by considering a three-level system with the adiabatic approximation. The delay-dependent interference features are investigated from the perspective of the coherent interaction processes between the attosecond pulse and the quasi-harmonics. We find that many features of the interference fringes in the absorption spectra of the attosecond pulse can be attributed to the coherence phase difference. However, the modulation signals of laser-induced sidebands of the dark state is found related to the population dynamics of the dark state by the dressing field.

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Wenpu Dong, Yongqiang Li, Xiaowei Wang, Jianmin Yuan, Zengxiu Zhao. 2015-03-09. Analysis of interference in attosecond transient absorption in adiabatic condition. https://doi.org/10.1103/physreva.92.033412

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