  Ising superconductivity has been recently discovered in 2D transition metal
dichalcogenides. We report that such superconductors have unusual optical
properties controlled by the in-plane Zeeman field. First, we find several
optical gaps visible as peaks of the conductivity and the Raman susceptibility.
Moreover, we find that the Ising spin splitting in the spectrum of Bogolubov
quasiparticles enables strong population inversion generated by the
time-dependent Zeeman field. Ultimately this leads to the possibility of the
superconducting laser with magnonic pumping which can be realized in the van
der Waals structures consisting of the Ising superconductor and the
ferromagnetic insulator layers.
