  Perfect deporalization of the Loudon-Fleury inelastic visible-light
scattering in the Kitaev honeycomb model is well known. Though it happens in
Heisenberg Kagome and triangular antiferromagnets as well, yet we prove it to
be of geometric origin rather than peculiar to quantum spin liquids. A Kitaev
spin liquid in the square planar geometry indeed exhibits polarized Raman
spectra containing defferent symmetry species, each brought by
symmetry-compatible spinon geminate excitations, i.e. arising from
symmetry-compatible direct-product representations made of double-valued
irreducible representations of mediating-spinon-belonging gauged $\bm{k}$-point
symmetry groups. We combine a standard point-symmetry-group analysis of the
Raman vertex in the real space and an elaborate projective-symmetry-group
analysis of Raman-scattering-mediating Majorana spinons in the reciprocal space
to identify emergent spinons singly.
