  We demonstrate optical reflectivity and Raman responses of graphite
microstructures as a function of light polarization when the incident light is
applied perpendicular to the material's stacking direction (c-axis). For this,
we employed novel graphite nanoribbons with edges polished through ion-beam
etching. In this unique configuration, a strong polarization dependence of the
D, G, and 2D Raman modes is observed. At the same time, polarized reflectivity
measurements demonstrate the potential of such a device as a carbon-based,
on-chip polarizer. We discuss the advantages of the proposed fabrication method
as opposed to the mechanical polishing of bulk crystals.
