The population trapping effect of the 3F4 level is an important factor limiting the power scaling of the 2.3 μm thulium[Tm]laser on the 3H4 → 3H5 transition.In this Letter,we demonstrate a novel scheme of ground state absorption[GSA](3H6 → 3H4]and excited state absorption[ESA][3F4 → 3H4]dual-wavelength pumped 2.3 μm Tm lasers.Introducing an ESA pumping process can accurately excite the Tm3+ ions accumulated in the 3F4 level to the 3H4 level,constructing a double populating mechanism for the upper laser level 3H4.A proof-of-principle experimental demonstration of the GSA[785 nm]and ESA[1470 nm]dual-wavelength pumped 2.3 μm Tm∶ LiYF4[Tm∶YLF]laser was realized.A maximum continu-ous-wave output power of 1.84 W at 2308 nm was achieved under 785 and 1470 nm dual-wavelength pumping,increased by 60％ compared with the case of 785 nm single-wavelength pumping under the same resonator condition.Our work provides an efficient way to achieve higher output power from 2.3 μm Tm-doped lasers on the 3H4 → 3H5 transition.