on the well established technique of Light-Shining-through-Wall (LSW) experiments for
axion-like particle searches. With radiation sources at 30 GHz, we compute that present
laboratory exclusion limits on axion-like particles might be improved by at least four orders of
magnitude, for masses ma≲ 0.01 meV. This could motivate research and development
programs on dedicated single-photon sub-THz detectors.