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综合分析了铬钙离子共掺钇铝石榴石晶体（Ｃｒ，ＣａＹＡＧ）可见光－近红外区的室温吸收光谱，其中四配位和六配位的四价Ｃｒ４＋离子光谱成分是共存的，拟合得到的晶场参数符合光谱学的理论和实验规律，并且这两类Ｃｒ４＋中心的晶场性质均受到晶体中二价补偿离子Ｃａ２＋的影响。
The absorption spectra at room temperature of the visible-near-infrared region of the Cr-Ca-codoped yttrium aluminum garnet crystal (Cr, CaYAG) were comprehensively analyzed. The spectral components of tetravalent and hexavalent tetravalent Cr4 + ions coexisted, Of the crystal field parameters in line with spectroscopy theory and experimental law, and the crystal properties of these two types of Cr4 + center are subject to the role of the crystal in the bivalent compensation ions Ca2 +.