用二元位相光栅进行激光束叠加的研究  

Study on laser beam combination by binary phase grating

作　　者：罗铂靓[1] 王成程[2] 杜惊雷[1] 马驰[2] 

机构地区：[1]四川大学物理学院,成都610064 [2]中国工程物理研究院激光聚变研究中心,绵阳621900

出　　处：《激光技术》2006年第4期381-384,389,共5页Laser Technology

摘　　要：基于标量衍射理论,系统探讨了二元位相光栅实现激光束叠加的理论和位相光栅设计方法,利用新型遗传模拟退火混合算法得到优化的光栅参数,给出其用于分束和耦合时的模拟结果,并讨论实际误差对位相光栅耦合效率的影响。二元位相光栅用于激光束叠加有结构简单,调节灵活的优点,可以有效地提高激光束的功率密度和系统的整体性能。From the point of view of Fourier optics,laser beam coherent combination by binary phase grating is discussed and the design method of phase grating is studied. Using the genetic-slmulated annealing algorithm, the optimum parameters of grating are obtained. Then,the simulation results of diffraction and combination are presented. The error analysis shows that it will influences the diffraction efficiency. For laser beam combination,binary phase grating is simple,flexible and can greatly improve the laser beam＇s power density and the system integration.

关 键 词：光学设计与制造 光束叠加 二元位相光栅 遗传模拟退火算法 误差分析 

分 类 号：O136.1[理学—数学]