黄山学院学报
黃山學院學報
황산학원학보
JOURNAL OF HUANGSHAN UNIVERSITY
2011年
5期
16-19
,共4页
夫琅禾费圆孔衍射%光强分布%最小二乘法
伕瑯禾費圓孔衍射%光彊分佈%最小二乘法
부랑화비원공연사%광강분포%최소이승법
Fraunhofer diffraction from a circle aperture%distribution of light intensity%least square method
以惠更斯-菲涅耳原理作为理论基础,探究夫琅禾费圆孔衍射光强分布的一种简便计算方法,在导出其光强分布函数之后,借助计算软件,绘出了光强分布图。最后采用最小二乘法原理拟合出了各级明环和暗环的位置的方程,并利用该方程外推了一些明、暗环的位置,这些外推数据与用光强分布函数直接计算的明、暗环位置能很好的符合。
以惠更斯-菲涅耳原理作為理論基礎,探究伕瑯禾費圓孔衍射光彊分佈的一種簡便計算方法,在導齣其光彊分佈函數之後,藉助計算軟件,繪齣瞭光彊分佈圖。最後採用最小二乘法原理擬閤齣瞭各級明環和暗環的位置的方程,併利用該方程外推瞭一些明、暗環的位置,這些外推數據與用光彊分佈函數直接計算的明、暗環位置能很好的符閤。
이혜경사-비열이원리작위이론기출,탐구부랑화비원공연사광강분포적일충간편계산방법,재도출기광강분포함수지후,차조계산연건,회출료광강분포도。최후채용최소이승법원리의합출료각급명배화암배적위치적방정,병이용해방정외추료일사명、암배적위치,저사외추수거여용광강분포함수직접계산적명、암배위치능흔호적부합。
Based on Huygens-Fresnel principle,a simple method for calculating light intensity of Fraunhofer diffraction from a circle aperture is presented,and its distribution function is derived explicitly.Then,in virtue of Mathematica software,the distribution graph of light intensity is drawn.Finally,the location equation of fringes is fit by the least square method and is used to extrapolate a few fringe locations.The result shows the extrapolated data are in good agreement with the results calculated by the function of light intensity distribution directly.
