yuwenhui2008 |
2015-07-26 20:41 |
用ASAP高斯光束分解的方法遇到的问题
各位光学专业的大神,我最近在用ASAP对微阶梯反射镜(如附图)进行模拟。一束单色平行光垂直入射到微阶梯反射镜上,用探测器接收反射光。如图,理论上在探测器上应该也是均匀的光场,但是用ASAP的高斯光束分解模拟得到的结果却如图所示。这是为什么呢? j#JE4(& 以下是我的ASAP代码,可以拷贝运行一下。 }[8Nr+y yZ57uz SYSTEM NEW 7P7d[KP< RESET ] !:0^| ">NPp\t>/Z UNITS MM Hp?uYih0 WAVELENGTHS 3.7 UM Y#aHGZ$i
h@"u==0 COATING PROPERTIES SoJ'y6 1 0 'REFLECT' ZsepTtY 0 0 'ABSORB' ck\gazo~q R.B3
PARABASAL 4 Jb"0P`senY BEAMS COHERENT DIFFRACT fN{JLp WIDTHS 1.6 !ie'}|c #Yr/GNN A=1 O^yDb N=32 e x`mu E L=(N)*(A) TWAt)Q"J D1=0.625E-3 GK-__Y. D2=(N)*(D1) 3# r`e !! 微阶梯镜======================= Uv"O'Z $DO -16 15 1 E<
Ini'od[ {SURFACE X6lUFko PLANE Z 0 RECTANGLE (A)/2 (L)/2 Af{K#R8! OBJECT 'MIRROR2_?' d
,!sZ&v INTERFACE COATING REFLECT AIR AIR J|GEt@o3 SHIFT X (A)*?+(A)/2 8ECBi( SHIFT Z (D2)*? !JC!GS"M5 } 64h$sC0z/e GROUP MIRROR2_? ?v$kq}Rg SHIFT Z (L) q'~F6$kv5 ROTATE X -90 0 0 qD/X% `>Q !! DETECTOR====================== ~*,e &I SURFACE M~k2Y$}R PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 #X?#v7i",D OBJECT 'DETECTOR' *dE5yS`H INTERFACE COATING ABSORB AIR AIR G'qGsKf\ !! SOURCE ======================= 6}9`z8 GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) eLc@w<yB SOURCE DIR 0 1 0 _pS!sY~d !! !!TRACE PLOT========================= w~I;4p~(N !!WINDOW Y Z l9up?opq !!PLOT FACETS 5 5 !!OVERLAY Q!_@Am"h TRACE!! PLOT .qjdi`v !!$VIEW V)g{ Ew]: yC<[LH CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY a="\?L5 WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 G)'(%rl PIXELS (256) 4RXF.kJ3= SPREAD NORMAL 'HdOW[3o DISPLAY ek3,ss3 !! FORM 0.5 g=)djXW PICTURE 7w]NG`7 RETURN
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