实现双半高斯空心光束宽度半径比调谐范围为0.1~1的技术研究  

Research on the Formation Scheme of Double Half-Gaussian Hollow Beams with the Ratio of Ring Width to Radius Being 0.1～1

作　　者：肖崇溧[1] 万春明[1] 董渊[1] 刘旭东 宋业英[1] 

机构地区：[1]长春理工大学理学院,吉林长春130022 [2]国家汽车零部件产品质量监督检验中心,吉林长春130022

出　　处：《光学学报》2011年第5期132-137,共6页Acta Optica Sinica

摘　　要：提出了一种利用改进型的卡塞格林光学系统（反射式正圆锥镜和球面反射镜相结合的光学系统）来产生一种光强分布特殊的空心激光束（双半高斯空心激光束）的新方案。详细分析了正圆锥镜的锥角、高斯光束的张角、球面反射镜的曲率半径等因素对该光学系统的球差以及宽度半径比的影响。通过对上述参数的调整,可以很容易获得宽度半径比的可控范围为0.1~1的双半高斯空心激光束。测试结果验证了由该系统所产生的空心光束确属于双半高斯空心光束范畴。A new scheme which can generate special intensity distribution hollow laser beams-double half-Gaussian hollow beams by modified Cassegrain optical system is presented,and the optical system is composed of reflecting positive conic mirror and spheric reflector.The factors such as conic angle of positive conic mirror,the divergence angle of Gaussian beams and the ature radius of spherical reflector,which influence on the ratio of ring width to radius and spherical aberration,are analyzed in detail.By adjusting the above parameters,the double half-Gaussian hollow beams with the ratio of ring width to radius being 0.1~1 can be easily obtained.And the experimental results show that the hollow beams which are generated by the modified Cassegrain optical system is double half-Gaussian hollow beams.The research provides the theory of generating the double half-Gaussian hollow beams with the ratio of ring width to radius being 0.1~1 and establishes solid foundation in the fields of scanning image and communication.

关 键 词：激光光学 改进型的卡塞格林光学系统 双半高斯空心激光束 宽度半径比 

分 类 号：O436[机械工程—光学工程]