摘要
Nonlinear optical(NLO)crystals can efficiently convert the frequency of common solid-state laser with fixed or limited wavelengths.Since the first observation of second-harmonic generation(SHG)phenomenon in the early 1960s,they have played an increasing role in the fields of laser spectra,precision measurements,and quantum information,as well as industrial laser processing,and so on.However,it is still challenging to rationally design and synthesize new NLO crystals.
