光吸收介质的吸收系数与介电函数虚部的关系-樊洁平

©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:2008-09-18::(1956),,,.,,(,100875):,,.:;;:O482:A:100020712(2009)0320024202()=1()+i2(),1(),2();‰n()=n()+i()[1,2],n()[1],(),.‰n()=n()+i()()=1()+i2()[1,2]n()+i()2=1()+i2()(1),n()2-()2=1()(2)2n()()=2()(3)12,n.2,;,.,2[1],2()[2],2()=0.2,,2.1,.,n‰n=n+i.xy,Ey=E0eikx-t=E0ei‰nxc-t=E0e-xceinxc-t(4)k=c‰n=cn+ic,c.;I|Ey|2,e-2cx,I(x)=I0e-x(5)()=2()c(6).()(),()=0.22(),(3)n()0,()0(7)(3)()=2()2n()(8)2()().(8)(6),©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:25()=2()cn()(9)n()0,[2].2(),:1)n()0()=0,;(6)()=0,(9);2)n()=0()0,();(6),()();n()=0,(9),(9).3n()=0()0[3]()=()2LO-22TO-2(10)TOLO,TOLO,(),1[3].,TOLO,.()0,(1),(2)(3)n()=0,()0(11)1TOLO,()0,(4)x,TOLO()[4];[3],[2,3]R()=n()-12+()2n()+12+()2(12)()=1()0‰n()=n()+i()=i()(n()=0),R()=1[3].,[2].412,n.;2(),.,()02()n().2()=0.2()=0:1)()=0,n()0,;2)()0n()=0,,.:[1].[M].2.:,1997:335.[2],.[M].:,1988:439-440.[3].[M].2.:,2002:44-46.[4],.[M].:,1988:115.TheimaginarypartofdielectricfunctionandtheabsorptioncoefficientFANJie2ping,LIUHui2min,TIANQiang(DepartmentofPhysics,BeijingNormalUniversity,Beijing100875,China)Abstract:Therelationsbetweenabsorptioncoefficientandtheimaginarypartofdielectricfunction,andbe2tweenabsorptioncoefficientandextinctioncoefficient,arediscussed.Theabsorptioncoefficientisproportionaltoextinctioncoefficient.Butitisnotalwaysthattheabsorptioncoefficientisproportionaltotheimaginarypartofdie2lectricfunction.Keywords:dielectricfunction;extinctioncoefficient;absorptioncoefficient