Feasibility study on optical vortex generation at Shanghai deep ultraviolet free-electron laser  

作　　者：邓海啸 

机构地区：[1]Shanghai Institute of Applied Physics,Chinese Academy of Sciences

出　　处：《Nuclear Science and Techniques》2014年第1期1-5,共5页核技术（英文）

基　　金：Supported by the Major State Basic Research Development Program of China(2011CB808300);the National Natural Science Foundation of China(11175240,11205234 and 11322550)

摘　　要：Coherent light with orbital angular momentum(OAM)is of great interest.Recently,OAM light generation by coupling a relativistic electron beam with a Gaussian mode laser pulse at the high harmonics of a helical undulator has been demonstrated experimentally.In this paper,the possibility of delivering coherent OAM light at the 3^(rd)harmonic of the Gaussian mode seed laser is discussed for the Shanghai deep ultraviolet freeelectron laser(SDUV-FEL).Considerations are given on the experiment setup,the expected performance and the possible measurement method.Coherent light with orbital angular momentum （OAM） is of great interest. Recently, OAM light generation by coupling a relativistic electron beam with a Gaussian mode laser pulse at the high harmonics of a helical undulator has been demonstrated experimentally. In this paper, the possibility of delivering coherent OAM light at the 3rd harmonic of the Gaussian mode seed laser is discussed for the Shanghai deep ultraviolet free- electron laser （SDUV-FEL）. Considerations are given on the experiment setup, the expected performance and the possible measurement method.

关 键 词：自由电子激光 深紫外 涡流发生器 光学 上海 相对论电子束 高斯模式 轨道角动量 

分 类 号：TN24[电子电信—物理电子学]