Induction of second-order nonlinear optical properties to glasses by picosecond pulsed laser

Abstract

Second-harmonic generation has been observed in optically poled tellurite glasses doped with V₂O₅. The optical poling has been performed by using fundamental wave at 1064 nm and second-harmonic wave at 532 nm from picosecond pulsed Nd:YAG laser. The results of SHG measurements indicate that the poling with picosecond pulsed laser could induce second-order nonlinear properties larger than that with nanosecond pulsed laser. Large electric field of picosecond pulse seemed to influence the writing efficiency of second-order nonlinearity.