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

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2019,（4）
• 页码范围: 31-34
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/36/4/044204

摘要

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.