基于掺铒氟化物光纤的22.8μm可调谐激光输出  

Mid-infrar ed 2.8μm tunable lasing based on erbium-doped fluoride fiber

作　　者：佟亮 黄海波[1] 文宇轩 陈颂元 陶俊哲 叶珊珊 郑子其 王洋洋 黄松 高伟清[1] TONG Liang;HUANG Haibo;WEN Yuxuan;CHEN Songyuan;TAO Junzhe;YE Shanshan;ZHENG Ziqi;WANG Yangyang;HUANG Song;GAO Weiqing(Department of Optical Engineering,School of Physics,Hefei University of Technology,Hefei 230601,China)

机构地区：[1]合肥工业大学物理学院光学工程系,安徽合肥230601

出　　处：《量子电子学报》2024年第2期269-277,共9页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(61875052,62105087,62105088,61905059);安徽省重点研发计划(202104a07020010);安徽省自然科学基金(2108085QF282,1908085QF273);中央高校基本科研业务费专项资金(JZ2021HGTA0145,JZ2020HGTB0065,JZ2021HGQA0255,JZ2021HGTA0148);国家级大学生创新创业训练计划项目(202110359079)。

摘　　要：采用高浓度掺杂的掺铒氟化物光纤可以增强铒离子的能量转移上转换过程,从而产生2.8μm波段的中红外激光。铒离子的全波段发射光谱范围覆盖0.5~3.0μm,其发射波长与相应能级之间的跃迁相吻合。对铒离子全波段的激光输出开展了实验研究。由于氟化物掺铒光纤的高掺杂浓度, 2.8μm激光占据主导地位。当泵浦功率为2~4 W时,激光输出在2714~2784 nm范围内可调谐,这是由增益竞争和腔内选择性以及非均匀加宽效应造成的。当泵浦功率增加到3 W以上时,可以观察到激光的谱分裂现象。实验获得了2.8μm波段的高稳定中红外激光,最大输出功率为0.7 W,斜率效率为12%。Abstrac t:Heavily erbium-doped fluoride fiber is used to enhance the process of energy transfer up conversion between erbium ions,leading to the generation of mid-infrared lasing around 2.8μm.The full band emission covering all the emitting lines of erbium ion from 0.5μm to 3.0μm is observed,and the emitting wavelengths agree well with the transitions between the corresponding energy levels.The full band lasing output of erbium ion is experimentally studied.It is found that 2.8μm lasing is dominant due to the high doping level.With the pump power changing from 2 W to 4 W,the peak wavelength of 2.8μm lasing could be tuned in the range of 2714-2784 nm,which is caused by the gain competition combined with the selectivity of cavity and the effect of inhomogeneous broadening.With the pump power increasing above 3 W,the spectral splitting of lasing can be observed.The high stable mid-infrared lasing at 2.8μm is ob tained with the maximum output power of 0.7 W and slope efficiency of~12%.

关 键 词：激光技术 中红外激光 掺铒氟化物光纤 激光调谐 光谱分裂 

分 类 号：TN248[电子电信—物理电子学]