  Materials with Berry curvature dipoles (BDs) support a non-Hermitian
electro-optic (EO) effect that is investigated here for lasing at terahertz
(THz) frequencies. Such a system is here conceived as a stack of low-symmetry
2D materials. We show that a cavity made of such a material supports a
nonreciprocal growing mode with elliptical polarization that generates an
unstable resonance leading to self-sustained oscillations. Notably, we
demonstrate that the chiral nature of the gain derived from the Berry dipole
allows for the manipulation of the laser light's handedness by a simple
reversal of the electric field bias.
