切换式双波长激发在掺镱和铒镱共掺复合式光纤激光器中的实现  

Simple Realization of Switchable Two-Wavelength Yb-Fiber and Er/Yb-Fiber Hybrid Laser

作　　者：种兰祥[1] 李建郎 

机构地区：[1]西北大学信息科学与技术学院 [2]电气通信大学激光科学研究所

出　　处：《中国激光》2007年第3期345-349,共5页Chinese Journal of Lasers

摘　　要：抽运旁通腔型的掺镱光纤(YDF)激光器内剩余的抽运光功率随着入射抽运功率的变化呈现出光学双稳特性,这导致了用它来抽运另一个分叉腔的铒镱共掺光纤(EYDF)增益介质可获得第二个信号波长激发的可能性。根据这一原理,从实验上获得了1040 nm和1537 nm两个激发线的可切换振荡,这表明基于掺镱光纤激光器光学双稳态的复合腔结构(掺镱光纤激光器的抽运旁通腔和铒镱共掺光纤分叉腔)是实现切换式双波长光纤激光器光源的一个简单有效的方法。The bistable feature of unabsorbed pump in pump-bypassed Yb-doped fiber （YDF） laser offers a possibility to pump the Er/Yb co-doped fiber （EYDF） in a bifurcated cavity. By this way, the lasing of the second lasing line is in a switching mode with that of 1040 nm lasing line. In this paper the wavelength-switchable lasing of 1040-nm and 1537-nm dual lines is investigated experimentally, and the results suggest that a switchable twowavelength source could be accomplished efficiently by combining the bistable feature of Yb-doped fiber laser with the hybrid cavity configuration （pump-bypassed cavity plus the bifurcated cavity）.

关 键 词：激光技术 光纤激光器 光学双稳 双波长切换式激发 

分 类 号：TN248.1[电子电信—物理电子学]