A general theory of the spectroscopic properties of partially ordered ensembles. II. Two‐vector problems

We have expanded on the results of an earlier paper [J. Chem. Phys. 72, 221 (1980)] which deals with a method for determining the response of a static, partially ordered ensemble of molecules to various types of electromagnetic probes. In this paper we consider types of spectroscopy whose response depends on the location of two vectors in an axis system fixed with respect to the molecule. Examples of such spectroscopies discussed in detail include fluorescence polarization, photoselection linear dichroism, Raman spectroscopy, and two‐photon absorption. We outline the kinds of structural information available from polarization experiments on partially ordered ensembles.Keywords: ENSEMBLE, POLARIZATION, SPECTROSCOPY, ORIENTATION, RAMAN SPECTRA, MOLECULES, DICHROISM, FLUORESCENC