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Multi-Scale Simulation for Transient Absorption Spectroscopy under Intense Few-Cycle Pulse Laser

Kansai Photon Science Institute, National Institutes for Quantum and Radiological Science and Technology, Kyoto 619-0215, Japan
Photonics 2016, 3(4), 63;
Received: 30 September 2016 / Revised: 2 December 2016 / Accepted: 5 December 2016 / Published: 7 December 2016
(This article belongs to the Special Issue Ultrafast Photonics and Attosecond Sciences)
PDF [722 KB, uploaded 7 December 2016]


Numerical pump-probe simulations for the sub-cycle transient spectroscopy of thin film diamond under intense few cycle pulse laser field is reported. The electron dynamics is calculated by the time-dependent Kohn-Sham equation. Simultaneously, the propagation of electromagnetic field is calculated by the Maxwell equation. Our result shows that the modulation of the reflectivity, transmission, and absorption around the optical gap do not coincide with the field amplitude of the pump laser. The phase shift of the modulation with respect to the pump field depends on the pump intensity and probe frequency. The modulation of the reflectivity is sensitive to the choice of the exchange-correlation potential, and dynamical effect of the mean-field in meta-GGA potential. View Full-Text
Keywords: TD-DFT; FDTD; time-resolved DFKE TD-DFT; FDTD; time-resolved DFKE

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Otobe, T. Multi-Scale Simulation for Transient Absorption Spectroscopy under Intense Few-Cycle Pulse Laser. Photonics 2016, 3, 63.

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