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报道了利用１．３１３μｍ波长调Ｑ锁模Ｎｄ３＋：ＹＬＦ激光泵浦国产掺铒石英光纤同时产生可见光４６３ｎｍ（４６３ｎｍ，４７５ｎｍ，４８５ｎｍ，４９４ｎｍ，５０１ｎｍ，５１０ｎｍ），５２５ｎｍ，５４０ｎｍ（５２５～５６４ｎｍ），二次谐波信号６５６ｎｍ（６５６～６７５ｎｍ）和近红外８０４ｎｍ（７８４～８２０ｎｍ）等波段放大自发辐射的实验结果．在可见光４６３ｎｍ波段，在高泵浦功率下观察到随泵浦光功率增大，邻近几个中心波长与４６３ｎｍ波长信号产生类似级联共振放大增强的现象。同时发现几个中心波长辐射光谱宽度随泵浦光功率增加有加宽的关系，这与现有实验结果报道不一致。实验中还发现３ｍ长光纤与４．５ｍ长光纤在输出可见光自发辐射光谱方面有很大的不同．３ｍ光纤在相等泵浦光功率下．出现邻近波长共振放大加强的几率比４．５ｍ光纤小得多。根据能级跃迁关系提出了共振四光子吸收将基态４Ｉ１５／２离子抽运到高能态２Ｇ７／２，然后跃迁辐射回到４Ｉ１３／２态的机制，给出了实验结果的初步机理解释。
It is reported that 463nm (463nm, 475nm, 485nm, 494nm, 501nm, 510nm), 525nm, 540nm (525 ~ 564nm) visible light can be produced by the Q- Subharmonic signal 656nm (656 ~ 675nm) and near infrared 804nm (784 ~ 820nm) and other bands amplified spontaneous emission experimental results. In the 463nm band of visible light, it is observed that with the increase of the pump light power at a high pump power, similar cascaded resonance amplification and amplification are observed in several adjacent center wavelength and 463nm wavelength signals. At the same time, it was found that the width of the radiation spectrum of several center wavelengths broadened with the increase of pump power, which was inconsistent with the existing experimental results. The experiment also found that the 3m long fiber and the 4.5m long fiber have great differences in the output of visible light spontaneous emission spectrum. 3m fiber at equal pump power. Adjacent wavelength resonance amplification appears to be much smaller than the 4.5m fiber. According to the energy transitions, the mechanism of the four-photon absorption of the ground state pumping the ground state 4I15 / 2 ions to the high-energy state 2G7 / 2 and then the transition radiation back to the 4I13 / 2 state is proposed. The preliminary mechanism explanation of the experimental results is given.