| 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？ 2M`Ni&v
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 B}T72 !a
j
KK48 S
SYSTEM NEW wpmtv3 2 5
RESET x&p=vUuukP
| %9~W^b
UNITS MM 6?~pj MV
WAVELENGTHS 3.7 UM G _o4A:2
0$
EJ4
COATING PROPERTIES 4K% YS
1 0 'REFLECT' 8b
$7#
0 0 'ABSORB' =]Bm>67"
H[oi? {L
PARABASAL 4 }DwXs` M7
BEAMS COHERENT DIFFRACT vsR&1hs
WIDTHS 1.6 (ZJ_&8C#
h@ 8
A=1 ,+{ 43;a
N=32 nQC[[G *x
L=(N)*(A) bZJiubBRI
D1=0.625E-3 ]e9kf$'
D2=(N)*(D1) 3e:y?hpeL
!! 微阶梯镜======================= KcE=m\ h
$DO -16 15 1 3+ 'w% I
{SURFACE {^iV<>J
PLANE Z 0 RECTANGLE (A)/2 (L)/2 [ j _jee
OBJECT 'MIRROR2_?' B dUyI_Ks:
INTERFACE COATING REFLECT AIR AIR ujBADDwOg)
SHIFT X (A)*?+(A)/2 xCD+qP ^
SHIFT Z (D2)*? +!wc(N[(2
} V00zk` PH
GROUP MIRROR2_? y uq E
SHIFT Z (L) Nq8A vBwo4
ROTATE X -90 0 0 %-.GyG$i
!! DETECTOR====================== 7dRU7p>
SURFACE G<I5%Yo6G
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 nNr3'6lz
OBJECT 'DETECTOR' Z9y:}:j"
INTERFACE COATING ABSORB AIR AIR j- -#vEW
!! SOURCE ======================= Z' ~FZRF
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) >'e qOZM
SOURCE DIR 0 1 0 %]` W sG
!! !!TRACE PLOT========================= 6 s/O\A
!!WINDOW Y Z P:o<kRj1
!!PLOT FACETS 5 5 !!OVERLAY H+Wd#7l,
TRACE!! PLOT !~#31kL&
!!$VIEW l%O-c}X
ueOvBFgZ
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY _e
W*
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 ? "gy`oCv
PIXELS (256) hG U &C]
SPREAD NORMAL 3ml|`S
DISPLAY 4C$,X!kzF
!! FORM 0.5 w>e OERZa
PICTURE 0 #ph1a<
RETURN
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