Design and analysis of spectral beam combining system for fiber lasers based on a concave grating  

作　　者：吴卓亮 赵尚弘 楚兴春 张茜 占生宝 马丽华 

机构地区：[1]Telecommunication Engineering Institute,Air Force Engineering University

出　　处：《Optoelectronics Letters》2012年第1期33-36,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.60678018)

摘　　要：A novel fiber laser spectral beam combining scheme based on a concave grating is presented.The principle of the presented system is analyzed,and a concave grating with blazed structure for spectral beam combining is designed.The combining potential of the system is analyzed,and the results show that 39 Yb-doped fiber laser can be spectrally beam combined via the designed system.By using scalar diffraction theory,the combining effect of the system is analyzed.The results show that the diffraction efficiency of the designed concave grating is higher than 72% over the whole gain bandwidth,and the combining efficiency is 73.4%.With output power of 1 kW for individual fiber laser,combined power of 28.6 kW can be achieved.

关 键 词：DIFFRACTION YTTERBIUM 

分 类 号：TN248[电子电信—物理电子学]