Polarized Raman Spectroscopy

摘要: Polarized Raman spectroscopy is a spectroscopic technique that uses polarized laser light having appropriate excitation wavelength to monitor the polarization dependent vibrational signature of a molecule by detecting the vibrations involving the change in polarizability. Raman spectra collected using this approach can reveal information about the symmetry of vibrational modes, molecular structure, degree of molecular orientation as well as symmetry of highly organized samples such as polar liquids, crystals, polymers, and carbon materials. Polarized Raman spectroscopy has the following advantages over other analytical techniques: (1) determination of anisotropy, (2) qualitative and quantitative determination of molecular orientation, and (3) exploration of amorphicity and crystallinity in molecular system. The main goal of this chapter is to help the reader comprehend the role of incident laser beam polarization …