Two-photon absorption from the real Gaussian field
Ce Chen, Daniel S. Elliott, M. W. Hamilton · Physical Review Letters · 1992
We have measured the absorption line shape for two-photon absorption from a broadband field known as the real Gaussian field. We observe that, in the case of large optical bandwidth, the width of the absorption spectrum is narrower than that of the optical field. Agreement with calculated line shapes and widths is excellent.