学科分类
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7 个结果
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  • 简介:Thisyearof2010witnessesthe10thanniversaryoftheForumofChina-AfricaCooperation(FOCAC),whichhasprovidedasolidplatformforfurtherdevelopmentofSino-AfricantraditionalfriendshipandusheredinanewperiodofChina-Africacooperationinallfields.ThisarticlehighlightsthemostprominentachievementsofFOCACoverthepastthreeyears,whichhopefullywillenablethereaderstobetterunderstandChina'srecentengagementwithAfrica.

  • 标签: 非合作 中国 论坛 非洲 引擎 通用
  • 简介:Areviewontheprogressofpowerful2μmsilicafibersourcesinpastdecadesispresented.Wereviewthestate-of-the-artrecordsandrepresentativeachievementsof2μmhigh-average-powercontinuouswave,pulsedfiberlasersandamplifiers,andpowerfulsuperfluorescentsources.Challengeswhichlimitthefurtherpowerscalingof2μmsilicafibersourcesarediscussed,includingpumpingbrightnesslimitation,thermalproblem,andnonlineareffects.Potentialandpromisingroadmapstogobeyondtheselimitations,liketandempumpingandbeamcombining,arediscussed.Prospectsofpowerful2μmsilicafibersourcesarealsopresentedintheendofpaper.

  • 标签: 微米 硅纤维 脉冲光纤激光器 高功率连续波 石英纤维 超荧光光源