  We study the laser-induced torques in the antiferromagnet (AFM) Mn$_2$Au. We
find that even linearly polarized light may induce laser-induced torques in
Mn$_2$Au, i.e., the light does not have to be circularly polarized. The
laser-induced torques in Mn$_2$Au are comparable in magnitude to those in the
ferromagnets Fe, Co and FePt at optical frequencies. We also compute the
laser-induced torques at terahertz (THz) frequencies and compare them to the
spin-orbit torques (SOTs) excited by THz laser-pulses. We find the SOTs to be
dominant at THz frequencies for the laser-field strengths used in experiments.
Additionally, we show that the matrix elements of the spin-orbit interaction
(SOI) can be used to add SOI only during the Wannier interpolation, which we
call Wannier interpolation of SOI (WISOI). This technique allows us to perform
the Wannier interpolation conveniently for many magnetization directions from a
single set of Wannier functions.
