Upconversion Luminescence of Er$lt;sup$gt;3+$lt;/sup$gt;/Yb$lt;sup$gt;3+$lt;/sup$gt; Co-doped La$lt;inf$gt;2$lt;/inf$gt;O$lt;inf$gt;3$lt;/inf$gt;-TiO$lt;inf$gt;2$lt;/inf$gt;-ZrO$lt;inf$gt;2$lt;/inf$gt; Glasses Prepared by Containerless Processing

Er 3+ /Yb 3+ La 2 O 3 -TiO 2 -ZrO 2 1 , 2 , 2 , 2 , 2 , 1 , 2 , 3 (1. , 213164; 2. , 200050; 3. , 213164) : (La 0.94-x Er 0.06 Yb x )(Ti 0.95 Zr 0.05 ) 2.25 O 6 (x=0~0.24, 0.04), 30% DTA , , x=0 T g T o 818 906, T(T= T o -T g ) 88, Yb 3+ , T g T o T , Yb 3+ /, 975 nm , Yb 3+ ; 70% , , : 980 nm