Photoinduced second harmonic generation in partially crystallized BiB3O6 glass

Photoinduced second harmonic generation was found in BiB3O6 (BiBO) glass having different degree of crystallinity. We have revealed that an increasing degree of crystallinity of BiBO glass leads to increase of the output second-order optical susceptibility. We have used a pulsed 35 MW nitrogen laser (lambda = 337 nm; tau = 50 ps) as a source of photoinducing laser beam. Fundamental laser beam was generated by pulsed Nd:YAG laser (lambda = 1.06 mum; time duration about 25 ps). Maximal value of the photoinduced second-order non-linear optical susceptibility d(222) was equal to about 5 pm/V, what is substantially higher than in case of BiBO single crystals (similar to3 pm/V). (C) 2003 Elsevier Science B.V. All rights reserved.