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GENERATION OF MULTI-WAVELENGTH VISIBLE LIGHT IN Er3+-DOPED AND Er3+/Yb3+-DOPED SINGLE-MODE OPTICAL FIBER PUMPED AT 1313 nm 下载免费PDF全文
We report the generation of multi-wavelength visible light through amplified spontaneous emission (ASE) in Er3+-doped and Er3+/Yb3+-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 hnes around 463-510nm corre-spond to transitions born 2G7/2 etc. excited states to the metastable 4I13/2 state, and their pumping mechanists is aecomphshed by a stepwise four-photon absorption. Some emission hnes in this wavelength region are attributed to the three-wave sum-frequency process of 1313 and 1530nm (corresponds to 4I13/2 -4I15/2). The intense green emission hnes at 525 and 540 nm are also observed in the Er3+-doped fiber. In the Er3+/Yb3+-doped fiber the blue and green lines are very weak compared with those in the Er3+-doped fiber. 相似文献
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本文报道了以1313nmNd:YLF激光脉冲泵浦掺饵(Er3+)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Er3+离子的2G7/2等几个激发态到4I13/2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(4I13/2-4I15/2)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. 相似文献
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稳定的全光纤飞秒激光光源 总被引:4,自引:4,他引:4
我们在实验上研究了掺Er3+全光纤飞秒激光器的稳定性,得到了令人极其满意的结果.锁模脉冲串如一幅图画贴在荧光屏上,一整天也不飘动.激光器的结构是环形腔.用输出功率为56mW,波长为980nm带尾纤的二级管激光器泵浦时,双路输出分别为194μW和97μW.激光器的阈值14.8mW,脉宽260fs,中心波长1.531μm,重复频率21.3MHz,光谱宽度33.6nm,说明可以产生很短的脉冲.这激光器小型、稳定、可靠、用途广.它是传感器和光通讯的好光源,在科研领域具有潜在的用途. 相似文献
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报道了利用光纤的非线性偏振旋转效应产生可饱和吸收体的锁模机制,从掺Er3+光纤环形腔激光器中产生稳定的高阶谐波锁模光脉冲的实验研究结果(限于示波器带宽,实验中最高曾测量到稳定的407.6 MHz重复频率的谐波锁模光脉冲).实验中发现有三种不同的演化方式产生高阶谐波锁模光脉冲,还观察到在83.52 MHz谐波锁模光脉冲的光谱中出现孤子光谱边带.四阶谐波锁模(83.52 MHz重复频率)超短光脉冲经过6 m长高掺杂浓度的掺Er3+光纤放大器放大后产生了平均输出功率13.88 mW,脉宽201 fs,中心波长1.531 μm,单脉冲能量为0.166 nJ,对应的光脉冲峰值功率0.811×103 W,增益19 dB的放大结果. 相似文献
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GENERATION OF MULTI-WAVELENGTH VISIBLE LIGHT IN Er3+-DOPED AND Er3+/Yb3+-DOPED SINGLE-MODE OPTICAL FIBER PUMPED AT 1313 nm 下载免费PDF全文
We report the generation of multi-wavelength visible light through amplified spontaneous emission (ASE) in Er3+-doped and Er3+/Yb3+-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 hnes around 463-510nm corre-spond to transitions born 2G7/2 etc. excited states to the metastable 4I13/2 state, and their pumping mechanists is aecomphshed by a stepwise four-photon absorption. Some emission hnes in this wavelength region are attributed to the three-wave sum-frequency process of 1313 and 1530nm (corresponds to 4I13/2 -4I15/2). The intense green emission hnes at 525 and 540 nm are also observed in the Er3+-doped fiber. In the Er3+/Yb3+-doped fiber the blue and green lines are very weak compared with those in the Er3+-doped fiber. 相似文献
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掺Er3+光纤环腔激光器的初步研究 总被引:4,自引:1,他引:4
本文报道采用环形腔使用偏振灵敏性光纤隔离器(P-SensitiveISO)构成的掺Er3+光纤激光器的激光输出特性研究结果.用976nm激光作为泵浦激光获得了0.42mW最大功率、中心波长1.5287μm的激光输出,阈值泵浦功率17mW.在改变腔内光纤偏振控制器(PC)的状态时,输出激光光谱分裂为二个分立的峰值,波长分别为1.5317μm和1.5502μm. 相似文献
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本文介绍一种采用高重复率梳状波电流调制1.3μm分布反馈(DFB)半导体激光器产生皮秒超短光脉冲的技术。采用1GHz重复率尖脉冲电流直接调制1.3μm半导体激光器产生了最短15ps、输出平均功率为4.5mW的超短光脉冲。 相似文献