简介:Lanthanidehasattractedmuchattentioninthefieldofopticalcommunicationsinrecentyears.SomepropertyanalysesonopticalwaveguideofNd-dopedcrystalNdxY1-xAl3(BO3)4andNd:MgO:LiNbO3aremadeinthispaper,followedbyintroductionofthemethodsofexperimentationandtheoreticalcalculationfortheplanaropticalwaveguides.Therefractiveindexprofilesoftheopticalwaveguidesareanalyzed.Theaboveworkoffersusefulinformationforstudyonnewtypematerialsforopticalcommunications.
简介:在这份报纸,消极地切换Q、锁模式的c切割在1.17m的做Nd的vanadate水晶self-Raman激光被使用Cr第一表明<啜class=“a-plus-plus”>4+:YAG。Nd的二晶体<啜class=“a-plus-plus”>3+:YVO4和Nd<啜class=“a-plus-plus”>3+:GdVO4被采用分别地产生激光。与13W的事件泵力量,在1.17m的678mW和852mW的平均产量力量分别地与1.8ns和2ns的切换Q的信封的持续时间被获得。锁模式的重复率分别地象2.3Hz和2.2GHz一样高。根据我们知道,切换Q的信封是最狭窄并且锁模式的重复率是最高目前在这块地里。另外,黄激光输出被使用解放也完成<潜水艇class=“a-plus-plus”>3O<潜水艇class=“a-plus-plus”>5频率加倍水晶。
简介:不知不觉中,明基的Joybook已经更新到了第二代。在明基BenQ品牌发布两周年之际,明基推出了全新系列笔记本,除了新型号Joybook6000以外,还有Joybook8000的升级版Joybook8100,Joybook5000系列的升级版Joybook5100。这次我们给大家介绍的就是Joybook5100.Joybook5100在Joybook5000基础上做了不少改进,Joybook5100整体给人感觉没有Joybook5000那么跳,不像Joybook5000那样曲线玲珑,Joybook5100的线条比较平滑,走的是中性化路线,这样更易让大众接受。
简介:Organicmultiplequantumwells(OMQWs)consistingofalternatinglayersoforganicmaterialshavebeenfabricatedfromtris(8-hdroxyquinoline)aluminum(Alq)and2-(4-biphenylyl)-5-(4-tertbutylphenyl)-1,3,3-oxadiazole(PBD)byamultisource-typehigh-vacuumorganicmoleculardeposition.Fromthesmall-angleX-raydiffractionpatternsofAlq/PBDOMQWs,aperiodicallylayeredstructureisconfirmedthroughtheentirestack.TheAlqlayerthicknessintheOMQWswasvariedfrom1nmto4nm.Fromtheopticalaborption,photoluminescenceandelectroluminescencemeasurements,itisfoundthattheexcitonenergyshiftstohigherenergywithdecreasingAlqlayerthickness,ThechangesoftheexcitonenergycouldbeinterpretedastheconfinementeffectsofexcitonintheAlqthinlayers.Narrowingoftheemissionspectrumhasalsobeenobservedfortheelectroluminescentdevices(ELDs)withtheOMQWsstructureatroomtemperature.