Bulk field poled LiNbO3 with a 3.3 mu m domain period is used to frequ
ency double unguided infrared emission generated by a high power semic
onductor laser. At 432 nm, 2.8 mW is generated with CW and 10.5 mW wit
h modelocked operation, respectively. Photorefractive effects are obse
rved at room temperature.