摘要

By investigating the Second-Harmonic Generation (SHG) of the bulk PbO/B2O3 glass sample with different compositions after thermopoling, it was found that there was an optimal poling temperature for each sample with different composition and there was a relation between optimal temperature and glass transition temperature. At their own optimal temperatures, samples had different frequency doubling efficiencies. We also found that the frequency doubling efficiency increased with the increase in poling voltage. We used a model of the release of effective dipoles which had been proposed to explain the super-quadratic relation between the second-order nonlinearity and the poling voltage of the bulk PbO/B2O3 glass.