A new class of photoassociation lasers has been demonstrated in which photoexcited alkali-rare gas collision pairs dissociate to produce laser action on either the D1 or D2 atomic transition of the alkali. The pump acceptance bandwidth of the collision pairs can be as broad as 5 nm, making exciplex-pumped alkali-vapor lasers (XPALs) attractive candidates for the conversion of multiple high-power laser diode array outputs into a single, low divergence beam. Quantum efficiencies exceeding 98% have been measured.