By studying the fluorescence spectra and EPR spectra of YAG crystals,we conclude absorption peak of CZ-grown YAG crystal at 255nm was attributed to Fe 3+ ions.

• 通过对YAG晶体荧光光谱及电子顺磁共振谱的测试和分析 ,认为提拉法的晶体在 2 5 5nm处产生的弱吸收是由Fe3 + 所引起的。