  Distinguishing between the left- and right-handed versions of a chiral
molecule (enantiomers) is vital, but also inherently difficult. Traditional
optical methods using elliptically or circularly polarized light rely on weak
linear effects which arise beyond the electric-dipole approximation, posing
major limitations for time resolving ultrafast chiral molecular dynamics. Here
we show how, by tilting the plane of polarization of an ultrashort burst of
intense elliptically polarized light, towards its propagation direction, we can
turn the light field into a highly efficient chiro-optical tool. This "forward
tilting" can be achieved by focusing the beam tightly, creating structured
light which exhibits a nontrivial polarization pattern in space. We demonstrate
that our structured field allows us to realize an interferometer for efficient
chiral recognition that separates the nonlinear optical response of left- and
right-handed molecules in space. Our work provides a simple, yet highly
efficient, way of spatially structuring the polarization of light to image
molecular chirality, with extreme enantio-sensitivity and on ultrafast time
scales.
