  The stability of matter-wave sensors benefits from interrogating
large-particle-number atomic ensembles at high cycle rates. The use of
quantum-degenerate gases with their low effective temperatures allows
constraining systematic errors towards highest accuracy, but their production
by evaporative cooling is costly with regard to both atom number and cycle
rate. In this work, we report on the creation of cold matter-waves using a
crossed optical dipole trap and shaping it by means of an all-optical
matter-wave lens. We demonstrate the trade off between residual kinetic energy
and atom number by short-cutting evaporative cooling and estimate the
corresponding performance gain in matter-wave sensors. Our method is
implemented using time-averaged optical potentials and hence easily applicable
in optical dipole trapping setups.
