phase Recovery from the Raman excitation profile, time domain information and transform theory

摘要

The phase recovery from the vibrational Raman excitation profile (REP), which contains only the modulus of the Raman amplitude, is discussed for the general situation where the Raman amplitude, with excitation energy Extended in the complex plane, may have zeros in the right-half plane. The focus is on the dispersion method, with All results derived by contour integration. The new results for phase recovery, however, apply to both the dispersion And maximum entropy methods. An iterative procedure, with rapid convergence, is presented to overcome the Experimental REP data being given in a limited energy range.