| 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？ ;P@]7vkff
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 /)P}[Q4
>L7s[vKn
SYSTEM NEW 7{;it uqX
RESET 1vj/6L
9j,g&G.K
UNITS MM ]?Ef0?4 4
WAVELENGTHS 3.7 UM oo5=5s6 3}
j|eA*UE
COATING PROPERTIES %Sr+D{B
1 0 'REFLECT' Z~5) )5Ye;
0 0 'ABSORB' OrY [
;XKe$fsa~?
PARABASAL 4 OmYVJt_
BEAMS COHERENT DIFFRACT r~4uIUE{
WIDTHS 1.6 MY&Jdmga
yK~=6^M
A=1 IPiV _c-l
N=32 {1W:@6tl
L=(N)*(A) !IxO''4
D1=0.625E-3 ?^}30V:E
D2=(N)*(D1) }U_
' 7_JT
!! 微阶梯镜======================= "t @p9>
$DO -16 15 1 8%?y)K^
D
{SURFACE {@Mr7*u
PLANE Z 0 RECTANGLE (A)/2 (L)/2 {$*N1$(%
OBJECT 'MIRROR2_?' E~'mxx~i
INTERFACE COATING REFLECT AIR AIR xO~ ElzGm
SHIFT X (A)*?+(A)/2 0#q=-M/?`
SHIFT Z (D2)*? @mp`C}x"0&
} _7 3q,3`24
GROUP MIRROR2_? z6>@9+V-&
SHIFT Z (L) :2 ;Jo^6Se
ROTATE X -90 0 0 :6^7l/p
!! DETECTOR====================== +6m. f,14q
SURFACE i!wU8 @
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 Q ?{%c[s
OBJECT 'DETECTOR' F L0uY0K
INTERFACE COATING ABSORB AIR AIR 7nZPh3%
!! SOURCE ======================= gv#\}/->4
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) Jd2.j?P=
SOURCE DIR 0 1 0 6*OL.~WE
!! !!TRACE PLOT========================= $o^Z$VmL
!!WINDOW Y Z gEA SYIQ
!!PLOT FACETS 5 5 !!OVERLAY e~'` x38
TRACE!! PLOT my=f} %k=
!!$VIEW 6_LeP9s )
k4TWfl^}9
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY wb-yAQ8
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 s}D>.9
PIXELS (256) H=r-f@EOrI
SPREAD NORMAL {|;a?] ?
DISPLAY a b0 Sx
!! FORM 0.5 *6uccx7{
PICTURE G=dzP}B'WA
RETURN
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