Second-harmonic generation in optically poled tellurite glasses doped with transition elements

Abstract

Second-harmonic generation in optically poled tellurite glasses doped with vanadium and rare-earth element has been observed. The optical poling is carried out by using fundamental wave at a wavelength of 1064 nm and second-harmonic wave at 532 nm from a pulsed Nd:YAG laser. The dependence of second-harmonic intensity on the concentration of dopants is examined. It is found that the second-harmonic intensity is enhanced by the co-doping of terbium. We speculate that the vanadium and terbium play a role of positive hole and electron traps, respectively.