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测量了Ｎｄ：ＴＥＡＧ晶体光纤的吸收谱、荧光谱和荧光寿命。Ｎｄ：ＹＥＡＧ晶体的吸收谱是Ｎｄ：ＹＡＧ和Ｅｒ：ＹＡＧ的吸收谱的叠加，在０．８μｍ左右Ｎｄ３＋和Ｅｒ３＋的吸收线共存，所以Ｎｄ：ＹＥＡＧ可作双重波长（λ＝１．０６、２．９３μｍ）的激光晶体。Ｎｄ：ＹＥＡＧ晶体的荧光谱不是Ｎｄ：ＹＡＧ和Ｅｒ：ＹＡＧ荧光谱简单叠加，根据０．７９～０．９６μｍ范围内存在荧光连续带，Ｎｄ：ＹＥＡＧ晶体有可能用作调频激光晶体。Ｅｒ３＋和Ｎｄ３＋离子间交叉弛豫导致Ｎｄ３＋的λ＝１．０６μｍ荧光明显减弱，因此用Ｅｒ的掺入以改善Ｎｄ：ＹＡＯ的激光特性是不可能的。
The absorption, fluorescence and fluorescence lifetime of Nd: TEAG crystal fiber were measured. The absorption spectrum of Nd: YEAG crystal is the superposition of the absorption spectra of Nd: YAG and Er: YAG. Coexistence of absorption lines of Nd3 + and Er3 + at about 0.8μm makes Nd: YEAG double wavelength (λ = 1.06,2 .93 μm) laser crystals. The fluorescence spectrum of Nd: YEAG crystal is not simply superimposed on the fluorescence spectrum of Nd: YAG and Er: YAG. According to the existence of continuous fluorescence band in the range of 0.79 ~ 0.96μm, the Nd: YEAG crystal may be used as FM laser crystal. The cross-relaxation between Er3 + and Nd3 + ions results in the significant decrease of λ = 1.06μm fluorescence of Nd3 +. Therefore, it is impossible to improve the Nd: YAO laser properties by Er incorporation.