| 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？ cP@H8|c=
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 Py+ B 2G|
aE"dpY Q
SYSTEM NEW q1r-xs jV=
RESET zqI |VH
#E<~W pP
UNITS MM P(C5@x(Z
WAVELENGTHS 3.7 UM HFz;"s3lWM
3k8. 5W
COATING PROPERTIES Rx.5;2 m
1 0 'REFLECT' V$u:5" qu0
0 0 'ABSORB' 37M,Os1(
0Y oV`D,U
PARABASAL 4 ?\X9 Ei
BEAMS COHERENT DIFFRACT {sq:vu@NC
WIDTHS 1.6 j``Ku@/x0
W3%RB [s-
A=1 ,e qRI>,\
N=32 [w+1<ou;j
L=(N)*(A) v&f\ Jv7
D1=0.625E-3 Un5 AStG
D2=(N)*(D1) :kjs: 6f]
!! 微阶梯镜======================= cnG> EG
$DO -16 15 1 e?]H Ny
{SURFACE {q~N$"#
PLANE Z 0 RECTANGLE (A)/2 (L)/2 t [G7&ovj
OBJECT 'MIRROR2_?' *Rc?rMF !
INTERFACE COATING REFLECT AIR AIR jD6T2K7i
SHIFT X (A)*?+(A)/2 6G_{N.{(
SHIFT Z (D2)*? @TzUc E
} FL0yRF5
GROUP MIRROR2_? yv)-QIC3
SHIFT Z (L) ~BnmAv$m[
ROTATE X -90 0 0 xZ QyH
!! DETECTOR====================== izu_KBzy
SURFACE 9'ky2
]w
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 zYftgH_o
OBJECT 'DETECTOR' 4v#s!W
INTERFACE COATING ABSORB AIR AIR )|Ka'\xr
!! SOURCE ======================= Ffd;aZ4n
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) aq(i^d
SOURCE DIR 0 1 0 &u (pBr8B
!! !!TRACE PLOT========================= OY!WEP$F-C
!!WINDOW Y Z @?t+O'&
!!PLOT FACETS 5 5 !!OVERLAY #X?E#^6?E
TRACE!! PLOT e_1L J
!!$VIEW ;g<y{o"Q3p
@CC
6 ` D
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY 0P;LH3sx
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 =}SLQdT
PIXELS (256) %e+*&Z',
SPREAD NORMAL uME_/S uO
DISPLAY *nV"X0&
!! FORM 0.5 3 u,B<
PICTURE mCQ:< #
RETURN
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