Phys. Rev. A 54, 4236–4248 (1996)Theory of high-order sum and difference frequency mixing in a strong bichromatic laser fieldReceived 19 April 1996; published in the issue dated November 1996 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. © 1996 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.54.4236
DOI:
10.1103/PhysRevA.54.4236
PACS:
42.50.Hz, 32.80.Rm, 42.65.Ky
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