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以355nm激光器抽运源抽运合作拉制的国产双包层掺铒光纤(DC-EDF),获得了可见光及近红外波段的荧光输出。经实验测定,对于长约8m的DC-EDF,在429mW入纤功率抽运下,可见光区的荧光波长约从375nm延续到800nm。荧光峰分别位于397.24、415.06、456.30、497.35、549.49、678.26nm。近红外波段的荧光谱约从1429.25nm延续到1667.75nm,激发峰处于1551.76nm。近红外波段荧光峰的位置和谱宽依赖于光纤长度,荧光谱宽经测定也随抽运功率的增加而加宽。实验结果证明355nm激光可以作为掺铒光纤的一种抽运源,为传统掺铒光纤光源提供了一种新的抽运选择,也为新波段光源的开发提供了实验基础。
The domestic double-clad erbium-doped fiber (DC-EDF) drawn by a 355 nm laser pump was used to obtain the fluorescence output in the visible and near-infrared bands. It has been experimentally determined that for a DC-EDF of about 8 m in length, the fluorescence wavelength in the visible region extends from about 375 nm to about 800 nm at a pumping power of 429 mW. Fluorescence peaks were located at 397.24,415.06,456.30,497.35,549.49,678.26nm. The fluorescence spectrum in the near infrared band extends from 1429.25nm to 1667.75nm and the excitation peak at 1551.76nm. The position and spectral width of the fluorescence peak in the near infrared band depend on the length of the fiber. The fluorescence spectrum width is also widened as the pumping power increases. The experimental results show that the 355 nm laser can be used as a pumping source for erbium-doped fibers, providing a new pumping option for conventional erbium-doped fiber sources and providing the experimental basis for the development of new-band light sources.