【摘要】 在不同氧含量的气氛中生长了Ｃｒ：Ｍｇ＿２ＳｉＯ＿４晶体，研究了生长及退火气氛对晶体光谱的影响。实验表明，提高生长气氛中的氧含量，有利于４价Ｃｒ离子的形成。调节生长气氛中的氧含量，可以改变所生长晶体的荧光光谱，以满足可调谐激光的要求。晶体的退火实验表明，退火气氛对晶体光谱也有明显影响。研究结果有助于进一步加强对该晶体发光中心及其作用机理的认识。更多还原

【Abstract】 Cr:Mg₂SiO₄ tunable laser crystals were grown under the atmospheres with different oxygen con-tents. The influences of growth and annealing atmosphere on optical spectra of the crystal were studied.Experi-mental results show that the increase of oxygen content in growth atmosphere is favorable to the formation ofCr￣（4+） ions in crystal.The fluorescence spectra of crystal can be modified by controlling the oxygen content,so asto meet the needs of tunable laser,The annealing results show that annealing atmosphere has a considerable influ-ence on the crystal spectra as well,this is favorable to further understanding the emssion center and mechanismof the crystal.更多还原