  We study non-perturbative effects of a static electric field on two-color
photoassociation of different atoms. A static electric field induces anisotropy
in scattering between two different atoms and hybridizes field-free rotational
states of heteronuclear dimers or polar molecules. In a previous paper [D.
Chakraborty $\it {et.}$ $\it {al.}$, J. Phys. B 44, 095201 (2011)], the effects
of a static electric field on one-color photoassociation between different
atoms has been described through field-modified ground-state scattering states,
neglecting electric field effects on heteronuclear diatomic bound states. To
study the effects of a static electric field on heteronuclear bound states, and
the resulting influence on Raman-type two-color photoassociation between
different atoms in the presence of a static electric field, we develop a
non-perturbative numerical method to calculate static electric field-dressed
heteronuclear bound states. We show that the static electric field induced
scattering anisotropy as well as hybridization of rotational states strongly
influence two-color photoassociation spectra, leading to significant
enhancement in PA rate and large shift. In particular, for static electric
field strengths of a few hundred kV/cm, two-color PA rate involving high-lying
bound states in electronic ground-state increases by several orders of
magnitude even in the weak photoassociative coupling regime.
