Abstract—A theoretical formalism is established for double-; p/ Z7 L4 m/ z! Y6 N
layer(DL)antireflectioncoating(ARC)onaone-dimensional6 M7 Z# E A% X1 i9 m5 j8 I& W: b
(1-D)photoniccrystal(PC).ConventionalDL-ARCforabulkis- D7 ^" N K2 n1 i/ u9 n7 @
equallyapplicablefora1-DPCwhenthebulksubstrateindexis9 B+ }/ F8 u- [6 K' q P
replacedwiththeopticaladmittance,whichcanbeobtainedfrom
) G2 \0 g% M( f$ t) I2 ftheelectromagneticBlochwavesoftheinfinite1-DPC.Numerical2 t3 J5 b h/ [: Z5 O/ f7 D( w
calculationsareperformedforamodelstructurecomposedof
; H2 O* d' @" c' d/ y" j& E0 {GaAsandAlAs-oxidelayerstoconfirmthevalidityofthetheory.
& u+ M% U. |: {# v$ |/ o& U- }Intermsofrealizationandpracticality,thisDL-ARCisexpected4 O/ a. W8 s; U: [# @
tobesuperiortothesingle-layerversion.+ L: X6 o$ @* m/ m4 R0 n
IndexTerms—Blochwave,double-layerantireflectioncoating: x# l" c) t. O( J
(DL-ARC),one-dimensionalphotoniccrystals(1-DPCs),optical, a$ z1 m* P% D5 s0 k' I
admittance. |
发表于 2007-5-27 01:36:36
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