We develop a theoretical framework for calculating the spectrum of resonance fluorescence emitted by two-level atoms that are excited by a strong bichromatic field. The dressed states for the two-level system that is interacting with a fully modulated field are identified, and the spectral features are interpreted in terms of transitions among these dressed states.
© 1991 Optical Society of America
G. S. Agarwal, Yifu Zhu, Daniel J. Gauthier, and T. W. Mossberg, "Spectrum of radiation from two-level atoms under intense bichromatic excitation," J. Opt. Soc. Am. B 8, 1163-1167 (1991)