Intrinsic (no contrast agent) microscopy in scattering media has posed a challenge to the imaging community for years - this talk presents a method that should greatly increase our ability to image deep into scattering media. Our group has recently developed a spectral pulse shaper based on an acousto-optic transducer that can be used to sensitively extract intrinsic nonlinearities in scattering media. By encoding information in the frequency spectrum of the pulse, rather than the spatial characteristics, our method is much more robust to scattering. I shall introduce the fundamentals of pulse shaping, previous work comparing our method to the z-scan technique (a spatial encoding of information), and finally current data and simulations exploring imaging with this technique.