高效紧凑室温Yb:YAG板条全固态激光技术研究

High efficiency and compact Yb:YAG slab all-solid-state laser at room temperature

摘要: 报道了高效紧凑室温Yb:YAG板条全固态激光研究进展。建立了室温Yb板条激光动力学模型，分析了泵浦激光通量和注入激光亮度与光光效率的关系，以及板条边缘效应抑制方法。实验获得了输出功率22.3 kW、光光效率36%和光束质量优于2.4倍衍射极限的激光输出，为更高功率的Yb板条激光关键技术研究及开发小型化、轻量化、实用化的高功率激光器奠定了基础。

Abstract: This paper presents the research progress of high efficiency and compact all-solid-state lasers based on Yb:YAG slab at room temperature. The laser dynamics model of Yb slab at room temperature is established. It is quantitatively analysed that the pumped laser intensity and the injected laser brightness influence the optical conversion efficiency. The method to suppress the slab-edge-effect is founded. The output power of 22.3 kW, the optical conversion efficiency of 36%, and the beam quality of 2.4 times diffraction limit, were achieved in experiment. These results lay a foundation for the key technology research of higher power laser and development of the miniaturized, lightweight and practical high power Yb slab laser.