Effect of La2O3 on Properties of Yb3+ Doped Yttrium Oxide Transparent Laser Ceramics

The effect of La2O3 on the structure and sintering performance of the(Yb0.05Y0.95)2O3 transparent laser ceramics was investigated.The results show that red shift of the characteristic Raman peaks occurs and the full width at half-maximum increases with the increase of La2O3 content in yttrium oxide transparent laser ceramics.But the relative intensity increases at first,and then decreases.At the same time,the density,the relative density and the transmittance of the yttrium oxide transparent laser ceramics are increased,the phonon energy and the grain size are decreased.With addition of more La2O3,the gain size keeps unchanged.However,there is little effect on the AES performance of the(Yb0.05Y0.95)2O3 transparent laser ceramics after adding La2O3.The optimal content of La2O3 is 10at% and the optimum sintering temperature is 1 700 ℃,and the inline optical transmittance of sample can reach 75%.