第一台激光器演示后近四十年 ,只有少数激光材料获得广泛的商业认可。经过二十多年的发展 ,紫翠宝石 (Cr3 +∶Be Al2 O4)激光器已成为迅速扩大的商业化市场中许多新应用的可能选择。使用紫翠宝石 ,主要从其基频光谱范围 (72 0～ 80 0 nm )转换到利用其谐波 ,后者覆盖了紫外光谱 Nearly four decades after the first laser was demonstrated, only a few laser materials gained widespread commercial acceptance. After more than two decades of development, Sapphire (Cr3 +: Be Al2 O4) lasers have become a viable option for many new applications in the rapidly expanding commercial market. The use of alexandrite, mainly from the spectral range of its fundamental frequency (72 0 ~ 80 0 nm) switch to the use of its harmonics, which covers the UV spectrum