All files are present in bitmap format + corresponding .csv files with experimental data.
Each file is named and numbered after the Figure in the paper (i.e., Fig.2.png corresponds to Fig.2 in the paper).

 
Files Fig.2.png and Fig.2_epsilon_and_fit, Fig.2_experiment:

Fig.2_experiment.csv is experimental data from IR measurements of BGO. The first column stands for Wavenumbers in cm-1, and
the second for Reflectivity

Fig.2_epsilon_and_fit.csv includes IR reflectivity data fitting (BGOthin3-fit column) and dielectric loss function derived from fitting 
(BGOthin3-e2 column).


Fig.3 consists of 4 plots, and their experimental data is in the files named: 
Fig.3_BGO(111)_0deg_vv.csv, Fig.3_BGO_001_I25_x20_HV.csv, Fig.3_BGO001_HV.csv, Fig.3_BGO45_001_HV_I25_x20.cvs.
Each of the files has 2 columns: the first one includes Wavenumbers in cm-1, the second - Raman Intensity in counts.


Fig.5 and Fig. 6 are angular dependent Raman spectra in HV with (Fig.6) and without(Fig.5) filters. Corresponding 
.csv files are Fig.5_BGO_360_hv, Fig.6_BGO_360_VF_hv. Each of the files has 2 columns: the first one includes Wavenumbers in cm-1, the second - Raman Intensity in counts.


Fig.7.png and Fig.7.csv include fitted angular dependent Raman spectra of BGO, where intensities of each mode are normalized.
In .csv file the first column stands for the angle, the second - intensity of F2(LO) mode, 3rd - normalized intensity of F2(LO) mode,
4th - intensity of A1 mode, 5th - normalized intensity of A1 mode, 6th - intensity of E mode, 7th - normalized intensity of E mode.


Fig. 8 - results of vortex filter implementation in forward Raman scattering (Fig.8_BGO_forward_VV_x20 vortex64.csv for VF64,
and Fig.8_BGO_forward_VV_x20 vortex8.csv for VF8), its comparison to the backward Raman scattering (Fig.8_BGO_001_I100_x20_VF64_backward_VV.csv for VF64, and Fig.8_BGO_001_I25_x20_VF8_backward_VV.csv for VF8), and its comparison to the measurement without filter
(Fig.8_BGO_001_I25_x20_VV_nofilter.csv). Each of the files has 2 columns: the first one includes Wavenumbers in cm-1, the second - Raman Intensity in counts.

Some data in the files might have Y or X offset, multiplication, etc. It is mentioned in the column name.