摘要
在对平面波经方环衍射后远场光强分布分析的基础上 ,对其光束质量作了详细研究。数值计算结果的物理分析表明 ,可用“桶中功率”曲线、β和 η参数评价这类环状光束的光束质量。同时也指出了这些方法的不足。
On the basis of analyzing far-field intensity distribution of pane-waves diffracted by a rectangular annular aperture, a detailed study of the beam quality has been made. Numerical calculation results have been illustrated. The results indicate that it is suitable to characterizing beam quality of this type of annular beams with power in bucket (PIB),β parameter and η parameter.On the other hand,the weakness of these methods has also pointed out.
出处
《激光技术》
CAS
CSCD
北大核心
2001年第5期335-337,共3页
Laser Technology
基金
华中科技大学激光技术国家重点实验室资助项目
关键词
方环衍射
光束质量
平面波
激光
diffraction at a rectangular annular aperture beam quality power in the bucket (PIB) β parameter η parameter
