摘要
提出了一种基于亚波长衍射光栅理论的介质-金属-介质的对称夹层结构,这种结构因为没有使用诸如折射率匹配液、光学固化胶等承受不了较高温度的黏接物质,所以可以用于大功率激光二极管阵列的侧面抽运,尤其可用于条形半导体激光器侧面抽运双包层掺杂光纤中,以制作各种大功率稀土离子掺杂光纤激光器,并且其耦合效率可以达到80%以上。同时,这种侧面抽运技术还支持多点抽运以及光纤两端同时激射高能激光。
A novel dielectric-metal-dielectric sandwich structure based on the theory of sub-wavelength diffraction grating was presented for efficient side-coupling of high power double-clad fiber （DCF） lasers. The structure design considerations and simulation results with high coupling efficiency which can be over 80% were also presented. It can be used for high power laser diodes bar to side-pump DCF lasers without any beam-shaping. Besides, this sidecoupling technique was scalable by multi-point pumping with several laser diodes bars.
出处
《中国激光》
EI
CAS
CSCD
北大核心
2007年第4期470-474,共5页
Chinese Journal of Lasers
基金
北京交通大学科技基金(2004RC073)
北京交通大学专项研究员基金(48101)资助项目
关键词
激光器
光纤激光器
双包层光纤
亚波长衍射光栅
耦合效率
lasers
fiber laser
double-clad fiber, sub-wavelength diffraction grating
coupling efficiency
