We　demonstrate　generation　of　widely　tunable　femtosecond　pulses　by　utilizing　the　soliton　self-frequency　shift　effect　in　a　Tm-doped　fiber　amplifier,　seeded　by　dispersion　managed　mode-locked　Tm　oscillator.　The　monochromatic　soliton　pulses　with　a　duration　of　the　order　of　100　fs　have　been　obtained　and　its　wavelength　can　be　adjusted　continuously　in　the　range　of　1.9-2.36　mu　m　by　varying　the　pump　power.　The　efficiency　of　Raman　conversion　is　as　high　as　97%　with　output　power　up　to　1.16　W.　The　experimental　results　are　in　good　agreement　with　numerical　simulations　of　pulse　propagation　in　Tm-doped　fiber　amplifier.　(C)　2016　Optical　Society　of　America