超短脉冲掺Yb^3＋光纤放大器实验研究  

Experimental Study on Ultrashort Pulse Ytterbium-Doped Fiber Amplifier

作　　者：杨玲珍[1] 王云才[1] 陈国夫[2] 王屹山[2] 赵卫[2] 

机构地区：[1]太原理工大学理学院物理系,太原030024 [2]中国科学院西安光学精密机械研究所,西安710119

出　　处：《光子学报》2008年第3期421-424,共4页Acta Photonica Sinica

基　　金：国家自然科学基金(60577019,60137010)资助

摘　　要：通过采用不同类型和不同长度掺Yb3+光纤进行被动锁模光纤放大器的实验研究.获得了最大输出功率为140mW,单脉冲能量为5.5nJ的超短脉冲.实验分析表明:掺杂光纤绿色荧光的产生和自吸收是影响放大器光转换效率的主要原因.绿色荧光的产生为Yb3+离子间相互作用引起合作能量转移过程,这种能量转移过程将降低光纤放大器的量子效率.The experimental study of ultrashort pulse ytterbium-doped fiber amplifier is reported. Using different kinds of Yb^3＋-doped fiber with different length, the maximum output power of ultrashort pulse after the amplification is 140 mW and the pulse energy reaches 5. 5 nJ. The results show that the generation of green luminescence and the self-absorb of the rare-earth-doped fiber are major factors, which influence the conversion efficiency of the amplifier. The green luminescence is the result of the transformation of resonance energy induced by the interaction between Yb^3＋ ions, which is cooperative energy transfer. The energy transfer will degrade the quantum efficiency of fiber amplifiers.

关 键 词：光纤放大器 超短脉冲 掺YB^3+光纤 

分 类 号：TN248[电子电信—物理电子学]