Abstract—A theoretical formalism is established for double-
$ v6 b7 C, d; D# j$ Ilayer(DL)antireflectioncoating(ARC)onaone-dimensional
# I9 I; S9 ?3 B9 U I8 f* x(1-D)photoniccrystal(PC).ConventionalDL-ARCforabulkis* I9 ]4 F4 r7 T5 W; p' j
equallyapplicablefora1-DPCwhenthebulksubstrateindexis. }6 Z5 E+ Q! e* b- I
replacedwiththeopticaladmittance,whichcanbeobtainedfrom
, r5 Q5 ^; H5 g: h* O" |2 }theelectromagneticBlochwavesoftheinfinite1-DPC.Numerical$ w; s: V" J+ M: a; B" F
calculationsareperformedforamodelstructurecomposedof
% s2 J* ?9 |4 r; L$ jGaAsandAlAs-oxidelayerstoconfirmthevalidityofthetheory.
6 w8 R8 S% @+ l2 m6 ZIntermsofrealizationandpracticality,thisDL-ARCisexpected
$ @+ i8 {2 s" W! e2 ztobesuperiortothesingle-layerversion.
/ l6 P$ J- j7 Q( MIndexTerms—Blochwave,double-layerantireflectioncoating
, p' ?' e) R+ _% y, u(DL-ARC),one-dimensionalphotoniccrystals(1-DPCs),optical; U: u* X4 f1 z1 R
admittance. |
发表于 2007-5-26 17:36:36
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