可用于自倍频激光器的Cr^（3＋）：YAB和Cr^（3＋）：YGAB晶体光学特性的研究

Optical Characterization or Cr￣(3+):YGAB and Cr￣(3+):YGAB Crystal for selr-frequency-doubling Laser

Ｃｒ３＋：ＹＡＢ和Ｃｒ３＋：ＹＧＡＢ晶体具有较宽的荧光光谱，从红光到近红外光。Ｃｒ３＋：ＹＡＢ晶体在７４４ｎｍ到８５２．５ｎｍ之间被测到光学增益。最大单程增益为１．９，对应波长为８２０ｎｍ。Ｃｒ３＋：ＹＡＢ晶体的二次谐波产生（３７ｎｍ）的转换效率是ＬＢＯ晶体的１．５倍。

Cr￣(3+):YAB and Cr￣(3+):YGAB crystals have broad fluorescence spectra ranging from the red to near-IR region. The optical gain of C￣(3-):YAB crystal was measured in the range from 744 urn to 852. 5 nm. The maximum single-pass gain was 1. 9 at 820 nm. Second harmonic generation in the UV region (375 nm) was obtained by a Cr￣(3-): YAB crystal with the conversion efficiency 1. 5 times as high as that of LBO crystal.