Nonlinear optics of semiconductors under an intense terahertz field
arXiv:cond-mat/0309444 · doi:10.1103/PhysRevB.68.195206
Abstract
A theory for nonlinear optics of semiconductors in the presence of an intense terahertz electric field is constructed based on the double-line Feynman diagrams, in which the nonperturbative effect of the intense terahertz field is fully taken into account through using the Floquet states as propagating lines in the Feynman diagrams.
5pages 1 figure, accepted by Phys. Rev. B