Polarization properties of an evanescent-wave pumped whispering gallery mode fibre laser  

作　　者：HAN DeYu PU XiaoYun JIANG Nan FENG YongLi ZHU Kun ZHANG YuanXian 

机构地区：[1]Department of Physics, Yunnan University, Kunming 650091, China

出　　处：《Chinese Science Bulletin》2010年第7期567-572,共6页

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.60877037 and 10564005)

摘　　要：The polarization properties of an evanescent-wave pumped Whispering Gallery Mode(WGM) fibre laser have been investigated. It is found that there are two kinds of polarization lasing beam emitting from the evanescent-wave pumped WGM fibre laser under two different pump conditions.When the pump beam is strictly along the axial direction of an optical fibre,the lasing emission is transverse electric wave and the electrical vectors at emitting points are along the radial direction of the fibre,which forms a special radial polarization radiation.However,when the pump beam deviates from the axial direction of the fibre,both transverse electric and transverse magnetic waves exist in the lasing emission,which forms a mixed polarization radiation with radial and axial polarized elements.Based on lasing radiation mechanism of evanescent-wave pumped WGM fibre laser,the observed polarization properties are well explained.The polarization properties of an evanescent-wave pumped Whispering Gallery Mode （WGM） fibre laser have been investigated. It is found that there are two kinds of polarization lasing beam emitting from the evanescent-wave pumped WGM fibre laser under two different pump conditions. When the pump beam is strictly along the axial direction of an optical fibre, the lasing emission is transverse electric wave and the electrical vectors at emitting points are along the radial direction of the fibre, which forms a special radial polarization radiation. However, when the pump beam deviates from the axial direction of the fibre, both transverse electric and transverse magnetic waves exist in the lasing emission, which forms a mixed polarization radiation with radial and axial polarized elements. Based on lasing radiation mechanism of evanescent-wave pumped WGM fibre laser, the observed polarization properties are well explained.

关 键 词：泵浦激光器 光纤激光器 偏振特性 回音壁模 激光辐射 轴向极化 GM公司 发射电波 

分 类 号：TN929.11[电子电信—通信与信息系统] TN248[电子电信—信息与通信工程]