在納米光學(xué)元器件中三維邊界元方法的研究.pdf

1、北京交通大學(xué)碩士學(xué)位論文在納米光學(xué)元器件中三維邊界元方法的研究姓名：常富坤申請學(xué)位級別：碩士專業(yè)：電磁場與微波技術(shù)指導(dǎo)教師：劉娟20080601ABSTRACTABSTRACT：Thephysicalmechanismandmanipulationoftheinteractionbetweenlightandmatterareinterestingproblemsforalongtimeandareinvestigatedbyphysi

2、cistsandengineersRecently，theinteractionbetweenlightandmetallicmaterialwithnanometerfeaturesizeattractedmoreinterestsbecauseofnovelphenomenaForexampletheextraordinaryopticaltransmission(EOT)oflightthroughanarrayofsubwave

3、lengthholeshasbeenreportedbyEbbesenata1in1998Furthermore，thecollimationbeamoflightCanberealizedwhentheperiodicsubwavelengthstructureisetchedonbothsideofthemetalfilmanditindicatesthatitispossibilitytobreakthoughthediffrac

4、tionlimitandconfinethelightwithinnanometerscaleHowevertherearemanyopenquestions，suchas，thephysicalmechanismOntheotherhand，theinteractionbetweenlightandllano—particlesalsohasattractedmoreandmoreattentionsThegeometricaland

5、physicalparameters，suchas，thesize，theshape，thearrangementofnanoparticlesandthematerialwheretheparticlesarelocatedwillaffecttheinteraction，andthemostconcernedissueistheenhancementoflocalmagneticfieldandtheselectivityoflig

6、htffequencyButuptonowtheresearchabouttheinteractionswhetherbetweenlightandsubwavelengthmetalconstructionorbetweenlightandnanometerparticleconstructionisbasedontwo—dimensional(2D)structureIntheactualdesignandapplication，a

7、llopticalelementsarethreedimensional(3D)Ifwesimulateappositely3Dproblembytheuseofthe2Dstructuremodel，therewillbeprodigiousdifferencebetweenthetheoreticresultsandtherealproblemItisnecessarytodevelopa3Dvectormethodtoinvest

8、igateexactlytheextraordinaryopticaltransmissionbasedonthreedimensionalstructureInthispaperIhaveeducedthe3DsurfaceintegralequationsbasedontherigorousMaxwell’Sequation，andthenhavesimulatedvarious3Dstructuresofopticalelemen

9、tsbysolvingtheequationsThemaincontentofthispaperisasflowing：【1]Thedeductionoftherigorousvectorsurfaceintegralequations[2】Thedevelopmentofthecomputerprogrammingandthecheckofcorrectness[3】Therigorouslynumericalresultsforse