Supplement A: The specific derivation process of the scattered o-light and e-light
Supplement B: Results of the physical experiment: angle-resolved Raman intensity distribution under the oblique backscattering configuration in the HV case
Supplement C: Results of the numerical experiment: the influence of principal stress difference and orientation angle on the Raman shift
Supplement D: The significant errors when ignoring W4, W5 and W6
Supplement E: Parameters tables