Phase manipulation of continuum generation and stimulated Raman scattering in ethanol

Phase modulated light pulses from a non-collinear optical parametric amplifier are used to manipulate the fluorescence intensity of a dye in ethanol solution. The spectrum of the exciting light is centered well to the red of the absorption spectrum of the dye but by tailoring the spectral phase we are able to control continuum generation within the solvent in such a way that the high frequency tail of the continuum spectrum overlaps the absorption spectrum of the dye. In a similar fashion we also demonstrate an ability to tune an intense spot of stimulated Raman emission laterally through the cuvette containing the solvent.