高亮度固体激光器技术发展研究

Development of High Brightness Solid-State Laser Technology

激光推进、激光传能等重大科研方向对高亮度固体激光器技术提出了重大需求,使得相关研究持续成为国际关注焦点。本文阐述了高亮度固体激光器技术的宏观需求,梳理国内外的技术研究现状并总结发展趋势,凝练技术进一步发展所面临的问题;据此完成高亮度固体激光器的关键技术分析,并结合国情提出未来发展建议。板条激光器和光纤激光器由于具有突出优点成为研究热点,在单台激光器输出功率不断提升的同时,可配合光束合成方法来实现高亮度激光输出。研究表明,应着重推动新型激光材料、高端半导体激光泵浦源、高精度封装工艺、自适应光束控制、光束合成关键器件等方面的技术攻关,尽快形成核心技术体系;科学布局以表层增益板条激光器技术为代表的、具有良好发展潜力的固体激光器技术研究课题,加强共用基础技术研究与积淀,为未来固体激光器输出亮度、转换效率、功率质量比的持续提升奠定坚实基础。

Laser propulsion,laser energy transfer,and other major research directions have proposed a major demand for high brightness solid-state laser technology,making relevant research remain the focus of international attention.This paper presents the macro demand for high brightness solid-state laser technology and summarizes the current situation of technology research in China and abroad,its development trend,and the problems for further development.Based on this,the key technologies of high brightness solid-state lasers are analyzed,and some suggestions are proposed for future development.The slab laser and fiber laser have become the focus of research owing to their outstanding advantages.While the output power of a single laser is constantly improving,the laser output with high brightness can be realized using the beam combination method.Key technologies should be promoted to form a technical system as soon as possible,such as new laser materials,high-ranking semiconductor laser pump source,high precision packaging process,adaptive beam control,and key components for beam combination.It is proposed to establish research projects for the solid state laser technology that is represented by the surface gain slab laser technology and has a good potential for development.The research and accumulation of common basic technologies should be strengthened to lay a solid foundation for the continuous improvement of output brightness,conversion efficiency,and power mass radio of solid-state laser in the future.