Abstract
In our preceding paper, we demonstrate the basic principle of the phase-coherent light scattering (COLS) method, focusing on polarized light scattering. In this paper we describe the principle of depolarized COLS. We explain how to excite coherent orientational motion of molecules in liquids and transverse sound waves in amorphous solids by using the electric-field grating, which is generated by crossing two cw laser beams in the media. We also explain how to observe complex spectra of depolarized light scattering from these anisotropic modes. The advantage of COLS over the conventional method is also discussed.
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