LINEAR AND NONLINEAR RESONANCE RAMAN-SCATTERING FROM SIMPLE SYSTEMS

Experimental and theoretical investigations on linear and non-linear r esonance Raman scattering from simple systems are discussed. We first report on studies of continuum resonance Raman scattering in halogen a nd interhalogen molecules, where we show how the experiments can be si mulated applying time-independent as well as time-dependent theory. Pr ecise determinations of repulsive excited state functions, scattering delay times, a reflection and a symmetry principle are discussed as we ll. Next we report on absorption, resonance Raman and resonance cohere nt anti-Stokes Raman scattering (CARS) spectroscopy in partially polym erized diacetylene single crystals. A theoretical model is presented w hich allows calculation of one-, two- and four-photon spectra as well as resonance Raman and resonance CARS excitation profiles. Comparisons are made to experimental results. Finally we describe recent experime ntal results on absorption, resonance Raman and resonance CARS spectro scopy of the permanganate ion doped in potassium perchlorate single cr ystals.