Mode instability in Yb3+-doped fiber amplifiers of continuous and pulsed signal

被引：0
|
作者：
Vershinin, O. [1 ]
Tyrtyshnyy, V. [1 ]
Kuznetsov, M. [2 ]
Antipov, O. [2 ]
机构：
[1] NTO IRE Polus, Fryazino, Russia
[2] RAS, Inst Appl Phys, Nizhnii Novgorod, Russia
来源：
2014 INTERNATIONAL CONFERENCE LASER OPTICS | 2014年
关键词：
Mode instability; LMA fibers; Yb3+;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Spatio-temporal instability of fundamental mode in Yb3+-doped large mode area polarization-maintaining fiber amplifiers was analyzed. Limitations of the amplifier output power and gain were investigated depending on the input signal parameters: spectral width, power level and polarization. The influence of backward reflection of the optical waves on the mode-instability threshold was also examined. The traveling electronic and thermal refractive index gratings following the optically-induced population gratings were found to provide the energy transfer from the main mode to the higher-order modes.
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页数：1
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