Theory of high-order sum and difference frequency mixing in a strong bichromatic laser field
We generalize the recently formulated theory of high-order harmonic generation by low-frequency laser fields to the case of high-order sum and difference frequency mixing in a two-color field of noncommensurate frequencies in the optical-infrared regime. Our theoretical description includes both the single-atom response and propagation. We observe a different behavior of the sum and difference frequency mixing processes, in the single-atom response as well as in the propagation results. The results of our calculations including propagation compare very well with recent experimental observations. © 1996 The American Physical Society.
Publication Source (Journal or Book title)
Physical Review A - Atomic, Molecular, and Optical Physics
Gaarde, M., L’Huillier, A., & Lewenstein, M. (1996). Theory of high-order sum and difference frequency mixing in a strong bichromatic laser field. Physical Review A - Atomic, Molecular, and Optical Physics, 54 (5), 4236-4248. https://doi.org/10.1103/PhysRevA.54.4236