,The 10 kW Level High Brightness Face-Pumped Slab Nd∶YAG Amplifier with a Hybrid Cooling System

• 作 者: Shuai Li Ya-Ding Guo Zhong-Zheng Chen Lin Zhang Ke-Ling Gong Zhi-Feng Zhang Bao-Shan Wang Jian Xu Yi-Ting Xu Lei Yuan Yang Kou Yang Liu Yan-Yong Lin Qin-Jun Peng Zu-Yan Xu
• 机 构: Key Lab of Solid State Laser, Technical Institute of Physics and Chemistry, Chinese Academy of Scien
• 出 处: 中国物理快报（英文版）
• 发表日期: 2019年4期

We demonstrate a high power,high brightness,slab amplifier based on face-pumped Nd∶ YAG slab gain modules,having a high efficient hybrid cooling system of the conduction cooling and forced convection cooling.Using a single gain module,a laser output power up to 4.5 kW with a remarkable optical-optical conversion efficiency of 51％ is realized,indicating an excellent lasing performance of the Nd∶YAG slab module.The amplifier operates at a repetition rate of 700Hz and delivers a maximum average output power exceeding 10.5 kW with pulse duration of 150μs.A good beam quality factor is measured to be β =1.9.To the best of our knowledge,this is the highest brightness for a 10 kW level Nd∶YAG slab amplifier.