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以高纯度的Zn,Ge和P粉末作为原料,采用垂直Bridgman法生长了磷锗锌(ZnGeP2,ZGP)晶体;分别在真空、磷蒸汽和ZGP晶体粉末中对生长的ZGP晶体进行了退火。测量了不同的退火条件下ZGP晶体中各元素的含量、激光损伤阈值、透过光谱和Raman光谱。研究表明:在ZGP晶体粉末中退火后的晶体激光损伤阈值为96.43MW/cm2,比在真空、磷蒸汽中退火的高;在近红外区域的吸收有所减少。Raman光谱测量结果表明,晶体的Raman振动模的数量发生了变化,表明退火环境对ZGP晶体的结果有一定影响。在ZGP晶体粉末中退火的ZGP晶体的性能有明显改善。
Zinc (ZnGeP2, ZGP) crystals were grown by the vertical Bridgman method using high purity Zn, Ge and P powders as raw materials. The grown ZGP crystals were annealed in vacuum, phosphorus vapor and ZGP crystal powders, respectively. The content of each element in ZGP crystal under different annealing conditions, laser damage threshold, transmission spectrum and Raman spectrum were measured. The results show that the damage threshold of crystal after annealing in ZGP crystal powder is 96.43MW / cm2, which is higher than that in vacuum and phosphorus vapor. The absorption in the near infrared region decreases. The results of Raman spectroscopy show that the number of Raman modes in the crystal changes, indicating that the annealing environment has some influence on the results of the ZGP crystal. The performance of ZGP crystals annealed in ZGP crystal powder is significantly improved.