clc????????????????%%%?《信息光學(xué)數(shù)字實(shí)驗(yàn)室?matlab版》-錢曉凡編著??實(shí)驗(yàn)二??二維光場分析（球面波）
clear
close?all
lamda=6328e-10;??????????????????????%波長，單位：米
k=2*pi/lamda;????????????????????????%波數(shù)
x0=0.001?????????????????????????????%點(diǎn)光源的x坐標(biāo)，單位：米
y0=0.001;????????????????????????????%點(diǎn)光源的y坐標(biāo)，單位：米
z=0.3????????????????????????????????%觀察面到點(diǎn)光源的垂直距離，單位：米
L=0.005??????????????????????????????%觀察面的尺寸，單位：米
x=linspace（-L/2L/2512）;y=x;????????%構(gòu)建x坐標(biāo)和y坐標(biāo)
[xy]=meshgrid（xy）;?????????????????%構(gòu)建二維坐標(biāo)網(wǎng)格
U1=exp（j*k*z）.*exp（j*k.*（（x-x0）.^2+（y-y0）.^2）/2/z）;??%發(fā)散球面光波
ph1=k.*（（x-x0）.^2+（y-y0）.^2）/2/z;????%發(fā)散球面波的實(shí)際相位
figuresurfl（ph1）shading?interpcolormap（gray）??????%%%?圖1
phyp1=angle（U1）;?????????????????????%發(fā)散球面波的包裹相位?????-pi到pi
figureimshow（phyp1[]）??????????????????????????????%%%??2
U2=exp（-j*k*z）.*exp（-j*k.*（（x-x0）.^2+（y-y0）.^2）/2/z）;?%會(huì)聚球面光波
ph2=-k.*（（x-x0）.^2+（y-y0）.^2）/2/z;???%會(huì)聚球面波的實(shí)際相位
figuresurfl（ph2）shading?interpcolormap（gray）???????%%??3
phyp2=angle（U2）;?????????????????????%會(huì)聚球面波的包裹相位
figureimshow（phyp2[]）?????????????????????????????????%%%４
figure?plot（ph2（257:）‘--‘）????????%實(shí)際相位的剖線　　　圖５
hold?on??????????????????????????????%保持當(dāng)前圖像
plot（phyp2（257:）‘r‘）???????????????%包裹相位的剖線??????圖5
diff1=U1+1;??????????????????????????%觀察面上發(fā)散球面光與垂直照射平行光的干涉???
I1=diff1.*conj（diff1）;???????????????%觀察面上的光強(qiáng)????????conj（）取復(fù)共軛
figureimshow（I1[0max（max（I1））]）???%??圖6
diff2=U2+1;??????????????????????????%觀察面上會(huì)聚球面光與垂直照射平行光的干涉
I2=diff2.*conj（diff2）;??%觀察面上的光強(qiáng)?????或者?I2=abs（diff2）.*abs（diff2）;
figureimshow（I2[0max（max（I2））]）???????%??7

?屬性????????????大小?????日期????時(shí)間???名稱
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?????文件??????28781??2016-04-17?11:44??2D?light?field?analysis\1.jpg

?????文件?????115639??2016-04-17?11:44??2D?light?field?analysis\2.jpg

?????文件??????24362??2016-04-17?11:43??2D?light?field?analysis\3.jpg

?????文件?????115667??2016-04-17?11:43??2D?light?field?analysis\4.jpg

?????文件??????16824??2016-04-17?11:43??2D?light?field?analysis\5.jpg

?????文件??????75137??2016-04-17?11:43??2D?light?field?analysis\6.jpg

?????文件???????1810??2016-04-17?11:38??2D?light?field?analysis\CX2_1.m

?????文件??????75137??2016-04-17?11:43??2D?light?field?analysis\二維光場分析（球面波）.jpg

?????目錄??????????0??2016-04-17?11:46??2D?light?field?analysis

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