| 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？ _66zXfM<
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 ]0 ouJY
+{]/
b%P
SYSTEM NEW OB6I8n XW
RESET 3i?{E ^
_"%d9B
UNITS MM kkyn>Wxv
WAVELENGTHS 3.7 UM +TpM7QaL
Fu )V2[TY
COATING PROPERTIES T_ [W =9
1 0 'REFLECT' n2Dnpe:
0 0 'ABSORB' } -V .upl
n6 O1 \}YB
PARABASAL 4 =(Mv@eA"
BEAMS COHERENT DIFFRACT 6DaH+
WIDTHS 1.6 q0`Vw%
7T_g?!sdMh
A=1 me1ac\
N=32 'RQZU*8
L=(N)*(A) _<pG}fmR
D1=0.625E-3 }C2I9Cl
D2=(N)*(D1) ]o6yU#zn~e
!! 微阶梯镜======================= u 6 l a
$DO -16 15 1 5>KAVtYvc
{SURFACE }s}b ]v
PLANE Z 0 RECTANGLE (A)/2 (L)/2 2i |wQU5w
OBJECT 'MIRROR2_?' >]T (}S~
INTERFACE COATING REFLECT AIR AIR /'TzHO9_`
SHIFT X (A)*?+(A)/2 a}M7"v9
SHIFT Z (D2)*? dI>)4( )
} z+PSx'#}
GROUP MIRROR2_? '[qG , ^f
SHIFT Z (L) Y'Wj7P
ROTATE X -90 0 0 1^!= J<`K;
!! DETECTOR====================== *vJ1~SRV
SURFACE ^ T(l3 r
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 {'"A hiR /
OBJECT 'DETECTOR' lH:TE=|4
INTERFACE COATING ABSORB AIR AIR nP 2 rN_:4
!! SOURCE ======================= >^| \wy
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) w]tv< U={
SOURCE DIR 0 1 0 0m7J'gm{
!! !!TRACE PLOT========================= eJ'2 CM6
!!WINDOW Y Z B xG0vJN |
!!PLOT FACETS 5 5 !!OVERLAY D G7FG--
TRACE!! PLOT UQ'D-eK
!!$VIEW 87~. |nu
C([;JO
11[
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY Haj`mc!<D0
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 MA(\ r
PIXELS (256) wMt? yc:X
SPREAD NORMAL T6O Ib
DISPLAY n@T4z.*~lA
!! FORM 0.5 ~;UK/OZ
PICTURE Yx(?KN7V?
RETURN
|
|
