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IntroductionIn recent years,Ge and its oxide haveattracted a considerable interest for their potentialapplication in optical filterdesign[1— 6 ] .To fabricateoptical devices,sometimes it is necessary todevelop a Ge O2 thin film on the surface of othermat
IntroductionIn recent years, Ge and its oxide have atattracted a considerable interest for their potentialapplication in optical filter design [1 - 6] .To fabricateoptical devices, sometimes it is necessary todevelop a GeO2 thin film on the surface of othermat