期刊
PHYSICAL REVIEW B
卷 87, 期 11, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.87.115201
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资金
- DFG Cluster of Excellence: Munich-Centre for Advanced Photonics
We propose a theory of optically induced currents in dielectrics and wide gap semiconductors exposed to a non-resonant ultrashort laser pulse with a stabilized carrier-envelope phase. To describe strong-field electron dynamics, equations for the density matrix have been solved self-consistently with equations for the macroscopic electric field inside the medium, which we model by a one-dimensional potential. We provide a detailed analysis of physically important quantities (band populations, macroscopic polarization, and transferred charge), which reveals that carrier-envelope phase control of the electric current can be interpreted as a result of quantum-mechanical interference of multiphoton excitation channels. Our numerical results are in good agreement with experimental data. DOI: 10.1103/PhysRevB.87.115201
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