Wang Juntao, Wang Dan, Su Hua, Zhou Tangjian, Xu Liu, Wu Zhenhai, Lei Jun, Lü Wenqiang, Chen Yuejian, Tong Lixin, Hu Hao, Gao Qingsong. Influence Factors on Efficiency of Nd∶YAG Planar Waveguide Laser Amplifier[J]. Chinese Journal of Lasers, 2017, 44(12): 1201005