Single walled carbon nanotubes and graphene oxide are deposited on glass and quartz by vertical evaporation method,respectively.By using single walled carbon nanotubes Absorber,passively mode locked Nd:YVO4 laser is obtained.The maximum output power is 3.6 W,the slope efficiency is 31%,the pulse duration is 7.6 ps and the repetition rate is 75 MHz.By using graphene oxide Absorber,passively mode locked Nd:GdVO4 laser is achieved.The maximum output power is 1.1 W,the slope efficiency is 11.3%,the pulse duration is 4.5 ps and the repetition rate is 70 MHz. ; Department of Applied Physics