Angle-resolved Raman spectroscopy (ARRS) is an effective method to analyze
the symmetry of phonons and other excitations in molecules and solid-state
crystals. While there are several configurations of ARRS instruments, the
measurement system detailed here utilizes two pairs of linear polarizers and
superachromatic half-wave plates. After the orientations of the linear
polarizers are set to fixed angles, the two half-wave plates rotate
independently, through motorized control, enabling 2D linear polarization
mapping. Described within is a protocol to achieve high quality ARRS
measurements leveraging phonons from easily accessible test materials
[molybdenum disulfide (MoS_2), sapphire (Al_2O_3) and silicon] to validate the
system and operation. Quantitative polarized Raman data strongly depends on the
quality of sample surface and the optics: the order of placement, alignment,
and any distortion caused by their coatings. This study identifies the impact
of commonly used edge filters on the polarization response of materials with an
anisotropic response as emulated by the T_2g phonon in the Si(100). We detect
and model the significant distortion of the T_2g phonon polarization response
originating from our dichroic edge filters, the results of which are broadly
applicable to optics in any Raman instrument. This ARRS setup also enables
helicity-resolved Raman measurements by replacing the first half-wave plate
with a superachromatic quarter-wave plate; this configuration is also validated
using the Raman response of the aforementioned test materials. This paper aims
to increase the quality and reproducibility of polarized Raman measurements
through both instrumental considerations and methodology.