  We produce ${^{84}\mathrm{Sr}_2}$ molecules using Bose-enhanced Raman
photoassociation. We apply the stimulated Raman adiabatic passage (STIRAP)
technique on a Bose-Einstein condensate (BEC) to produce more than $8 \times
10^3$ ultracold molecules. This chemical reaction is only made possible because
of the Bose enhancement of the optical transition dipole moment between the
initial atomic state and an intermediate molecular state. We study the effect
of Bose enhancement by measuring the transition Rabi frequency in a BEC and by
comparing it with measurements for two atoms in sites of a Mott insulator. By
breaking the dimers' bond and directly observing the separated atoms, we
measure the molecular inelastic collision rate parameters. We discuss the
possibility of applying Bose-enhanced STIRAP to convert a BEC of atoms into a
BEC of molecules, and argue that the required efficiency for STIRAP is within
experimental reach.
