摘要
研究光纤放大器的耦合效率以及影响输出功率的因素.抽运源为光纤输出976 nm的半导体激光器,增益光纤为长4.4 m的D型掺Yb3+双包层光纤,信号源为自行研制的单块非平面环形腔激光器.抽运光的耦合效率为80%,信号光的耦合效率为44%,入纤抽运光功率为24 W,信号光功率为200 mW时,得到了6.65 W的净输出功率,放大倍数达到33倍.分别对信号光及放大输出的频谱进行测量,结果为1 064 nm的单频放大.实验表明,信号光对放大增益的抽取非常重要,在此实验中信号光尚未饱和,放大功率仍有提高的余地.
The coupling efficiency of the amplifier and the factors affecting the output power improvement are investigated. The pumping source is a fiber coupled laser diode array with radiation at 976 nm, and the gain medium is a D-shaped double-clad fiber with the length of 4.4 m, The signal laser is a non-planar ring oscillator. The coupling efficiency for pump and signal are 80% and 44%, respectively. Output power 6.65 W was obtained when the launched pumping power is 24 W and the signal power is 200 mW. In experiment, the input signal was not saturated, so the amplification has the potential to be improved.
出处
《北京理工大学学报》
EI
CAS
CSCD
北大核心
2006年第1期60-62,共3页
Transactions of Beijing Institute of Technology
基金
国家部委预研项目(41302010107)
关键词
二极管抽运
双包层光纤
单频放大
laser diode pumping
double-clad fiber
single frequency amplifier
