  Anisotropy of light-matter interactions in materials give remarkable
information about the phonons and their interactions with electrons. We report
the angle-resolved polarized Raman spectroscopy of single-crystal of Bi2Se3 to
obtain the elements of Raman tensor for understanding the strength of
polarization along different crystallographic orientations. Intensity variation
in the polar plots corresponding to E_g^1 ~ 37 cm-1, A_1g^1 ~71 cm-1, E_g^2 ~
130 cm-1, and A_1g^2 ~ 173 cm-1 suggests the higher differential polarizability
along cross-plane (bc-plane). The polar patterns and the differences in
elements of the Raman tensor provides the evidence of the fundamental
electron-phonon and anisotropic light matter interactions in Bi2Se3.
