| 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？ Th!S?{v
以下是我的ＡＳＡＰ代码，可以拷贝运行一下。 !C/`"JeYL
)p !dql K
SYSTEM NEW 7l:H~"9r
RESET 7 IIM8/BI
t@4vEKw?.X
UNITS MM WcUeWGC>
WAVELENGTHS 3.7 UM | kV xrq
-R\}Q"
COATING PROPERTIES *Pq`~W_M7
1 0 'REFLECT' 5 -&P4
0 0 'ABSORB' :;|x'[JoE?
,p 'M@[
PARABASAL 4 Dxu )by
BEAMS COHERENT DIFFRACT n09|Jzv9
WIDTHS 1.6 S)[2\Z{**T
7tr.&A^c
A=1 Xi|v!^IT
N=32 W``e6RX-
L=(N)*(A) dm.3. xXq
D1=0.625E-3 :Mt/6}
D2=(N)*(D1) rAQ^:q
!! 微阶梯镜======================= =]Ek 12.
$DO -16 15 1 d&U;rMEv
{SURFACE "\V:W%23W{
PLANE Z 0 RECTANGLE (A)/2 (L)/2 +oi Pj3
OBJECT 'MIRROR2_?' _ wqFKj
INTERFACE COATING REFLECT AIR AIR Y< M }'t
SHIFT X (A)*?+(A)/2 V5A7w
V3~
SHIFT Z (D2)*? 9GQTe1[t4
} ^^ ?ECnpcU
GROUP MIRROR2_? h2tzv~
SHIFT Z (L) E3KP jK
ROTATE X -90 0 0 SD6 97L9
!! DETECTOR====================== z?i82B[Tm
SURFACE N4D_ 43jz
PLANE Y -(2*L) RECTANGLE (L)/2 (L)/2 fmSA.z
OBJECT 'DETECTOR' FEP\5d >
INTERFACE COATING ABSORB AIR AIR e~}+.B0
!! SOURCE ======================= B$lbp03z
GRID RECT Y -(L) -(L)/2 (L)/2 -(L)/2 (L)/2 (256) (256) {wMCo ,
SOURCE DIR 0 1 0 dvxH:,
!! !!TRACE PLOT========================= ,Y&kW'2
!!WINDOW Y Z ZERd#7@m+
!!PLOT FACETS 5 5 !!OVERLAY Dbtw>:=
TRACE!! PLOT !-7(.i -
!!$VIEW t
Y^:C[
qI'a|p4fn?
CONSIDER ONLY DETECTOR !!CONSIDER ONLY DUMY -'I)2/%g
WINDOW X -(L)/2 (L)/2 Z -(L)/2 (L)/2 8>epKFEg
PIXELS (256) }y0UyOa{ C
SPREAD NORMAL xW^<.@Agm
DISPLAY f j"S|]e
!! FORM 0.5 2Nj0 Hqjq
PICTURE
t qER;L
RETURN
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