In this paper,the growth of a new organic nonlinear optical crystal,1 benzoyl 3 ( O chlorophenyl) thiourea(BCT),and its second order nonlinearity are reported.

• 本文报道了新型光学晶体1－苯甲酰基－3－（2－氯苯基）硫脲（BCT）的单晶生长及其倍频性能。