Abstract—A theoretical formalism is established for double-; }9 X5 R1 t% S9 B ~
layer(DL)antireflectioncoating(ARC)onaone-dimensional; f& J2 O. e) r& R3 o
(1-D)photoniccrystal(PC).ConventionalDL-ARCforabulkis
0 \0 \+ l+ O( e, @equallyapplicablefora1-DPCwhenthebulksubstrateindexis
& d* ]; [# R! `- G5 c0 Lreplacedwiththeopticaladmittance,whichcanbeobtainedfrom
, C3 |, e9 o3 G! `+ C; ~7 ]" r$ ~theelectromagneticBlochwavesoftheinfinite1-DPC.Numerical& m! t0 ~: q$ o! f2 x( E* v6 d+ Y5 K
calculationsareperformedforamodelstructurecomposedof
9 Y5 H6 N( I$ q9 W8 }+ [GaAsandAlAs-oxidelayerstoconfirmthevalidityofthetheory./ N8 i: I6 ~: _
Intermsofrealizationandpracticality,thisDL-ARCisexpected
; Q' e7 ~$ a1 u* |0 ^# ytobesuperiortothesingle-layerversion.3 W! D, b* B5 H. g9 X1 x- W. {3 {
IndexTerms—Blochwave,double-layerantireflectioncoating
/ t' ~7 F. k( S. [& r(DL-ARC),one-dimensionalphotoniccrystals(1-DPCs),optical
$ q+ r S4 j' |2 k) e8 V' {4 i9 y4 jadmittance. |
发表于 2007-5-27 01:36:36
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