Fourier-Transform IR (FTIR) polarization spectroscopy has been applied to study segmental orientation of a new class of liq.-cryst. side-chain (LCSC) polyesters as a function of laser irradn. From the exptl. results qual. structural models and quant. results in terms of an order parameter were derived. Time-dependent investigations yielded a detailed insight into the orientational response of the mesogens, and temp.-dependent studies were applied to monitor the erasure of the induced orientation.