摘要
在直角坐标系下对平顶高斯光束和超高斯光束的传输特性的相似性问题作了讨论。研究表明 ,当有相同的 M2 因子但束宽不同的平顶高斯光束和超高斯光束通过光阑效应可忽略 ABCD光学系统传输时 ,在广义菲涅尔数 F相等处有相似的光强分布。对于有光阑和用球差透镜聚焦的情况 ,若平顶高斯光束和超高斯光束具有相同的 M2 因子和束腰宽度 。
The similar propagation property of flattened Gaussian beams (FGBs) and super-Gaussian beams (SGBs) is studied in the rectangular coordinate system. It is shown that two FGB and SGB with the same M2-factor but different waist width exhibit similar intensity distributions at the position of the equal generalized Fresnel number, as they propagate through an unapertured ABCD optical system. For the apertured case and focusing by a spherically aberrated lens, similar intensity profiles at the equal propagation distance can be also obtained, if two FGB and SGB have the same M2-factor and waist width.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2001年第6期675-678,共4页
High Power Laser and Particle Beams
基金
国家高技术惯性约束聚变主题项目 (863 -4 16-2 -1.2 )
四川省重点科技项目资助课题 (2 0 0 0 -14 )
