以355nm激光器抽运源抽运合作拉制的国产双包层掺铒光纤(DCuEDF),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人纤功率抽运下,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。
Using a 355-nm laser to pump a home-made double-cladding erbium-doped fiber (DC-EDF), visible and near-infrared fluorescence emissions are obtained. For a 8-m long DC-EDF, visible fluorescence can cover the wavelength region from 375 nm to 800 nm under 429 mW launched pump power, in which the fluorescence peaks are at 397.24, 415.06, 456.30, 497.35, 549.49, 678.26 nm. The near-infrared fluorescence ranges from 1429.25 nm to 1667.75 nm. The peaks and band-widths in the near infrared region are strongly dependent on the length of the DC-EDF. We also observe the broadening of bandwidth when the launched pump power is enhanced. Our results demonstrate that the 355-nm laser can be utilized to pump EDF, which provides a new approach for the traditional EDF light sources. Development of light sources operating at new-wavelength band is possible according to experimental results.