▎ 摘　　要

We report on the first graphene passively Q-switched Ho:YAG ceramic laser with central wavelength of 2,097 nm. Stable pulses of 28-64 kHz repetition rate and 2.6-9 mu s pulse widths were generated under 1,907 nm thulium fiber laser pumping. Maximum average power of 264 mW with 9.3 mu J pulse energy was obtained under 3.27 W of pump power.