The results of Gaussian fitting show that there are F center, F+ center, F2 center, F+2 center and F2+2 center in sapphire implanted with Nb+ ions.

• 通过对光吸收谱进行高斯拟合及荧光谱分析确认，引起吸收的点缺陷主要是F、F+、F2、F+2、F2+2心等阴离子空位。