早在本世纪60年代末,人们就提出了激光自倍频晶体的设想.1979年Dmitriev等人首次研制成功激光自倍频Nd:LN晶体,并在实验室内观察到激光自倍频现象.1981年Dorozhkin等人发表了NYAB晶体从1.32μm到0.66μm激光自倍频效应.1990年Chou等人首次简要地报道了第三个激光自倍频Cr:KTP晶体研究的信息,在此以前,我们实验室已开始了对Cr:KTP晶体生长的研究. As early as the late 60s of this century, people put forward the idea of ​​laser self-doubling crystals .1979 Dmitriev et al. The first successful laser self-doubling Nd: LN crystal was developed in laboratory and laser self-doubling phenomenon was observed in the laboratory. In 1981, Dorozhkin et al. Published laser self-doubling effects of NYAB crystals from 1.32μm to 0.66μm. In 1990, for the first time, Chou et al. Reported briefly the third laser self-doubling frequency Cr: KTP crystal. Before that, Our laboratory has started the study of Cr: KTP crystal growth.