From red to blue light: wavelength-dependent photopolarimetry of Mars regolith analogues

We studied how the composition and surface roughness of Mars regolith simulants affect the way they scatter polarized light.
Using laboratory measurements at 488 nm, we compared the results with previous observations at 640 nm.
We found that stronger absorption at shorter wavelengths significantly alters the scattering behavior, while the influence of surface roughness remains robust.
These results help us better interpret remote observations of planetary surfaces.