基于衍射计算的激光束变换应用研究  

Application research of laser beam transformation based on diffraction calculation

作　　者：傅纪斌[1,2] 姚建华[1,2] 胡晓冬[1,2] 陈君[1,2] 董辰辉[1,2] 

机构地区：[1]浙江工业大学机械制造及自动化教育部重点实验室,浙江杭州310014 [2]浙江工业大学激光加工技术工程研究中心,浙江杭州310014

出　　处：《激光杂志》2008年第6期49-50,共2页Laser Journal

基　　金：浙江省自然科学基金(Y107489);浙江省教育厅科研计划项目(20060824);浙江省先进制造技术与装备重中之重学科开放基金(AMT200506-008)

摘　　要：通过建立等效近似光学系统,研究了激光加工用的抛物面反射聚焦系统的光学变换特征,并根据标量衍射理论,导出任意给定入射光束在通过光学系统后不同空间平面上光束的强度分布,并对实际检测的高功率高阶混合多模激光束通过聚焦系统后的光强分布做了详细的计算。结果表明,衍射计算的结果与实验相吻合。This paper uses an equivalent approximate optical system to study the optical transformation characters of parabolic mirror systems which have been applied to the laser heat treatment. Based on scalar diffraction theory, and for arbitrary incidence laser beams, intensity distributions in different spatial planes behind an optical system are derived. Finally, simulated calculations of intensity distributions after focusing system of practical incidence laser are given. The results were agreed with the experiments.

关 键 词：衍射计算 激光变换 抛物面反射镜 激光加工 

分 类 号：TN241[电子电信—物理电子学]