简介:Lanthanidehasattractedmuchattentioninthefieldofopticalcommunicationsinrecentyears.SomepropertyanalysesonopticalwaveguideofNd-dopedcrystalNdxY1-xAl3(BO3)4andNd:MgO:LiNbO3aremadeinthispaper,followedbyintroductionofthemethodsofexperimentationandtheoreticalcalculationfortheplanaropticalwaveguides.Therefractiveindexprofilesoftheopticalwaveguidesareanalyzed.Theaboveworkoffersusefulinformationforstudyonnewtypematerialsforopticalcommunications.
简介:发光二极管(LED)具有非常广泛的用途,光子晶体(PC)是一种新概念和新材料,采用PC的LED则大大提高了光输出效率,是一种很有发展前途的LED器件,已成为目前国内外研究的热点.本文介绍了PCLED的基本原理、结构、重要特性参数及其典型器件.
简介:ThroughusingbothCr4+:YAGandGaAssaturableabsorbers,adiode-pumpeddoublepassivelyQ-switchedNd:GdVO4laserisrealizedandcomparedwithasinglepassivelyQ-switchedlaser.Thislasercangeneratesymmetricpulsetemporalprofilesandshorterpulses.Alaserpulsewidthof17nshasbeenachievedwiththeincidentpumppowerof8.5W.