制备了Tm3+-Er3+-Yb3+共掺含NaYF4纳米晶的透明氟氧化物玻璃陶瓷。根据X射线粉末衍射结果确认玻璃中包含NaYF4纳米晶。测量了样品的吸收光谱和在980 nm LD红外光激发下的荧光光谱。同时观察到了明亮蓝光（475 nm）、绿光（530, 550 nm）和红光（651, 668 nm）。上转换蓝光是由于Tm3+离子1G4→3H6跃迁，上转换绿光是由于Er3+离子的2H11/2→4I15/2和4S3/2→4I15/2跃迁，上转换红光分别是由于Tm3+离子1G4→3H4和Er3+离子4I9/2→4I15/2跃迁。在Tm3+和Yb3+浓度比一定的情况下，通过改变Er3+的浓度来研究红、绿、蓝光的光强积分与Tm3+-Er3+-Yb3+浓度比的变化关系。为了得到上转换荧光的发光机制，基于稀土离子的能级图，研究了上转换发光强度与激发功率的对数关系。

Tm3+-Er3+-Yb3+-codoped transparent oxyfluoride glass ceramics containing NaYF4 nanocrystals are fabricated. The formation of NaYF4 nanocrystals in the glass ceramics is confirmed by X-ray diffraction. Absorption spectra and upconversion fluorescence emission spectra under 980 nm excitation are measured. Intense blue (476 nm), green (520 and 550 nm) and red (651 and 668 nm) emissions are simultaneously observed. Upconversion blue emission is corresponding to the 1G4→3H6 transition of Tm3+; Upconversion green emissions are corresponding to the 2H11/2→4I15/2 and 4S3/2→4I15/2 transitions of Er3+, respectively; Red emissions are corresponding to the 1G4→3H4 of Tm3+ and 4I9/2→4I15/2 of Er3+. Under the invariable concentrations of Tm3+ and Yb3+, the diversification of tricolor light integral intensity is investigated by changing concentrations of Er3+. To obtain upconversion fluorescence mechanisms, upconversion fluorescence intensity versus LD pump power are analyzed in view of energy levels of rare-earthions.