报导了一种基于稀土改性的钨酸铅晶体 PbWO4:RE3+ (RE = La, Y或 Gd)的声光调制器. 根据实测的钨酸铅晶体中的声速数据,估算了 PbWO4单晶的声光优值.结果表明其声光优值与目 前常用的钼酸铅晶体十分接近.但是, PbWO4:RE3+在光谱紫外区的截止波长为 330 nm使它可以 在更短的波段工作 , 并具有抗紫外辐照的能力.该器件的中心频率为 80 MHz,带宽 20 MHz, 在 1W驱动功率下,一级衍射光的衍射效率为 85%( He- Cd激光, 442 nm).
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