A 1 908 nm Tm:YLF slab laser pumped by two fiber coupled diode lasers at room temperature is reported. The suitable size of spot is chosen. The maximum continuous output power is 60.1 W at 18 ℃, corresponding to the slope efficiency of 39.8%. The precise control of wavelength is achieved by adopting the method of volume body grating (VBG) with 0.3 mm F-P, corresponding to the full-width at half-maximum (FWHM) of 0.14 nm.