高功率陶瓷板条激光器

High power ceramic slab laser

高功率固体激光在先进制造、能源、信息、医疗及国防等领域有广泛应用。激光陶瓷材料具有掺杂浓度均匀可控、抗激光热损伤能力强、易于制备大尺寸和复合结构等优点,被认为是高功率固体激光的重要增益材料。报道了本课题组近年来在高功率陶瓷板条激光方面的主要研究进展。采用中国科学院上海硅酸盐所制备的大尺寸Nd:YAG陶瓷板条,实现了平均功率4.35 kW的1064 nm脉冲激光输出,脉冲宽度为160μs,重复频率为400 Hz。此外,采用中科院上海硅酸盐所制备的大尺寸Yb:YAG陶瓷板条,实现了平均功率9.8 kW的1030 nm脉冲激光输出,脉冲宽度为560μs,重复频率为160 Hz,光光转换效率为60%。这些研究表明,激光陶瓷材料具备实现高功率、高光束质量与高效率激光的潜力。

High power solid-state laser has been widely used in energy,advanced manufacturing,information,medical and military defense fields.As a new generation of solid laser materials,the laser ceramic materials are characterized by uniform and controllable doping concentration,good optical uniformity,strong resistance to laser thermal damage,easy to prepare large size and composite structure,which have great potential in high power laser generation.In this paper,the research progress of high power ceramic slab laser in recent years was reported.The Nd:YAG ceramic slab laser was developed.It could be realized that the maximum output power was 4.35 kW and the laser pulse width was 160μs at a repetition rate of 400 Hz.Moreover,the Yb:YAG ceramic slab laser was developed with the maximum output power of 9.8 kW under the pulse width of 560μs and repetition frequency of 160 Hz.The optical conversion efficiency was 60%relative to the absorbed pumped power.These studies have explored new technical ways for the further development of high beam quality and high efficiency solid-state laser with higher output power.