摘要
基于精确的衍射场公式和横截面上光强的精确表述 ,分析讨论了单色平面光波经小圆孔衍射后 ,其衍射光束轴上光强的最大值以及轴上光强极值的数目和小圆孔半径的关系 ;并且由此考察了一般的菲涅耳数计算公式的使用条件。
Based on the accurate diffraction formula and the accurate expression of light intensity on the transverse plane, the characteristics of axial light intensity of planar wave diffracted by small circular aperture are investigated. Variation relations of the maximum axial light intensity and the numbers of light extremum versus the radius of small circular aperture are given. The application condition of general Fresnel number formula is also studied.
出处
《光学学报》
EI
CAS
CSCD
北大核心
2003年第1期22-25,共4页
Acta Optica Sinica
基金
国家自然科学基金 (19974 0 38
6 0 2 76 0 35和 10 2 76 0 34)资助课题
关键词
平面波
物理光学
轴上光强
衍射
小圆孔
菲涅耳数
physical optics
axial light intensity
diffraction
small circular aperture
Fresnel number
