Dip in time-varying saturated absorption in spectra of homogeneously broadened systems with bleaching
Zubova M. S. , Kochanov V. P.
A theory is derived for nonlinear resonances of a new type: dips in the absorption spectra of the intense pulsed emission from a three-level system and from vibrational-rotational transitions of molecules. These dips form against the background of homogeneously broadened lines and may have widths less than the radiative width. Under certain conditons, a peak forms within a dip.