摘要
本文报道了以１３１３ｎｍＮｄ：ＹＬＦ激光脉冲泵浦掺饵（Ｅｒ￣（３＋））单模ＧｅＯ２／ＳｉＯ２光纤而产生多波长可见光的实验，在该光纤中观察到（４６３～５１０）ｎｍ间的多波长放大自发辐射过程，此过程对应于Ｅｒ（３＋）离子的￣２Ｇ７／２等几个激发态到￣４Ｉ＿（１３／２）亚稳态的跃迁。其激发过程是分步的四光子吸收过程，同时，掺饵光纤的红外发射峰１５３０ｎｍ（￣４Ｉ＿（１３／２）－￣４Ｉ＿（１５／２））与１３１３ｎｍ泵浦光之间的三波混频过程也对这一区间的连续多峰的光谱结构有贡献。实验中还观察到５４０ｎｍ附近的绿光辐射。
We report the generation of multi-wavelength visible light through amplified spontaneous emission(ASE )in Er3+-doped germanosilicate single-mode optical fiber pumped by a Nd:YLF laser at 1313nm,In the Er3+-doped fiber,the intense multi-wavelength blue emission around 463nm～510nm corresponds to the transitions from 2G7/2 etc。excited states to the metastable 4I13/2 state, and their pumping mechanism is accomplished by a stepwise four-photon absorption,Some wavelength at this region corresponds to the three-wave mixing-frequency light of l313nm and l530nm(corresponds to 4I13/-4I15/2). The intense green emission at 525nm and 540nm is observed in Er3+ -doped fiber。
出处
《光子学报》
EI
CAS
CSCD
1996年第11期961-964,共4页
Acta Photonica Sinica
基金
国家自然科学基金
国家攀登计划飞秒激光技术和超快过程研究资助项目
关键词
放大自发辐射
三波混频
掺饵光纤
Amplified spontaneous emission
Three-wave mixing-frequency
Er3+-doped fiber.
