title: Second-harmonic generation in a direct-bonded periodically poled LiNbO(3) buried waveguide.
abstract: We report the fabrication of a 12-mum -thick periodically poled LiNbO(3) planar waveguide buried in LiTaO(3) by direct bonding of precision-polished surfaces. Frequency doubling of the 1064-nm output of a cw diode-pumped Nd:YAG laser was performed in a 5.5-mm-long device with a 6.50-mum -period grating at an elevated temperature of 174 degrees C. The resultant green second-harmonic output exhibited fundamental-spatial-mode characteristics at a 4.3%W(-1) conversion efficiency.
authors: C B
authors: CB
authors: Gawith
authors: D P
authors: DP
authors: Shepherd
authors: J A
authors: JA
authors: Abernethy
authors: D C
authors: DC
authors: Hanna
authors: G W
authors: GW
authors: Ross
authors: P G
authors: PG
authors: Smith