Large second-order susceptibility in poled ZF/sub 7/ lead silica for sum-frequency generation

Second harmonic generation from a poled glass is studied for its application prospects and its mechanisms. By poling the second order susceptibility (SOS) in the surface layer of glass, the anode side can be comparable with that in a KDP crystal. We report the SOS in poled ZF/sub 7/ lead silica is as large as 7 pm/V by calibrating with a quartz plate. As we know, it is the first time that a poled glass is used to generate the sum-frequency at 355 nm.