刀口法测量高斯光束光斑半径研究  

Investigation on measuring beam width of the Gaussian beam by knife-edge method

作　　者：杨晓冬[1] 邵建新[2] 廖生鸿[1] 谭锦业[1] 周杰[1] 蒋跃文[1] 

机构地区：[1]广东梅州嘉应学院物理学院,广东梅州514015 [2]新疆石河子大学物理系,新疆石河子832003

出　　处：《激光与红外》2009年第8期829-832,共4页Laser & Infrared

基　　金：广东省自然科学基金(No.8451401501000668)资助

摘　　要：根据高斯光束光强分布公式,讨论了P(x)%/(1-P(x)%)为任意值时,高斯光束光斑半径与刀口-光斑中心距比值及相应的光斑半径的测量误差;根据理论分析结果,在P(x)%为不同值条件下,对基模高斯光束光斑半径进行了实验测量,实验结果与理论分析符合较好。The rate of the beam radius and the distance between the knife-edge and the center of the Gaussian beam for different percentage of transmitting knife-edge light power is theoretically investigated. The error of measuring the beam width is also theoretically investigated. Based on the theoretically investigation,the beam width are experimentally measured by using different percentages of transmitting knife-edge light power to the total power. There is a better agreement between the theoretical and experimental results.

关 键 词：刀口法 高斯光束光斑半径 透光百分比 

分 类 号：TN206[电子电信—物理电子学]