Design and analysis of flat-top beam produced by diffractive optical element
The modified Gerchberg-Saxton (G-S) methods of diffractive optical elements are presented for converting a Gaussian beam into a flat-top beam.The sample points of the input and output planes are discussed based on the sampling principle.The relationship between weighting factor,empirical constant,diffractive efficiency,and intensity uniformity is investigated.The simulation results of different modified methods are calculated when the incident beams are the same.The results show that the intensity uniformity of the output flat-top beam is the best when using the ST modified method.
laser beam shaping diffractive optics flat-top beam Intensity distribution
Shuzhen Nie Jin Yu Yang Liu Zhongwei Fan
Department of Optoelectronic Engineering, Academy of Opto-Electronics, Chinese Academy of Sciences, No.9, Dengzhuang south Road, Haidian District, Beijing 100094, China
国际会议
重庆
英文
800-807
2015-03-21（万方平台首次上网日期，不代表论文的发表时间）