Universe is about half of antimatter
in the Alfven cosmology,
which is based upon plasma physics from the lab;
their is no "light & antilight," though;
antimatter looks like matter!

thus:
speaking of Young's anhialation of Newton's photons,
here is the earlier elaboration on light by Fermat:
http://www.wlym.com/~seattle/dynamis/issues/august08-fermat.pdf