1150nm掺镱光纤激光器输出特性实验研究

Experimental Investigation of an 1150nm Yb-doped Fiber Laser

以光纤光栅对为激光腔、双包层掺镱光纤为增益介质、976nm半导体激光器为泵浦源,研制全光纤化的1 150nm波段长波光纤激光振荡器.在室温下实现了最大平均输出功率为12.7 W的1 150nm波段单模光纤激光输出,激光振荡器的光光转换效率为42.33%.最大功率输出时,激光中心波长为1 150.48nm,光谱的3dB线宽为0.45nm,边模抑制比达38dB.该研究对研制1 150nm波段高功率光纤激光振荡器具有一定的参考价值.

An all-fiber 1 150 nm long-wavelength fiber laser oscillator was demonstrated by using apairs of fiber brag grating as the laser cavity,apiece of Yb-doped as the gain media and a 976 nm laser diode as the pump source.1 150 nm band single-mode fiber laser with max output power of 12.7Wis obtained at room temperature and the optical-to-optical conversion efficiency is up to 42.33%.The central wavelength is 1 150.48 nm,the 3dB spectral width is 0.45 nm and the optical signal-to-noise ratio is38 dB.The research results will make a contribution to the further development of high-power 1 150 nm long-wavelength fiber laser oscillator.