Laser-induced　periodic　surface　structures　have　been　extensively　studied　for　various　materials　because　of　their　promising　applications.　For　these　applications,　uniform　rippled　structures　with　well-defined　large　areas　are　required.　However,　the　efficient　fabrication　of　uniform　rippled　structures　is　a　challenge.　Morphologies　of　rippled　structures　of　multiple-shot-ablated　regions　considerably　affect　the　processing　efficiency　of　uniform　rippled　structures　because　incubation　effects　are　crucial.　In　this　study,　the　effects　of　a　pulse　number　and　irradiation　modes　on　surface　morphologies　of　rippled　structures　on　the　titanium　surface　are　experimentally　studied.　The　experimental　results　indicate　the　following:　(1)　Samples　first　irradiated　using　several　shots　and　then　using　remaining　shots　by　designing　laser　pulse　irradiation　modes　exhibit　improved　surface　morphologies,　such　as　larger　ablation　areas　and　finer　rippled　structures.　(2)　When　the　pulse　number　in　the　first　series　is　less　than　that　in　the　second　series,　the　rippled　structures　are　characterized　using　larger　areas　and　periods.　(3)　The　ablated　areas　with　rippled　structures　increase　with　the　increasing　number　of　pulses.　(4)　The　periods　of　ripples　reduce　with　the　increasing　number　of　pulses.　Therefore,　according　to　different　requirements,　uniform　rippled　structures　can　be　efficiently　fabricated　and　adjusted　using　the　designed　laser　pulse　modes　and　pulse　number.