Second-harmonic generation in a direct-bonded periodically poled LiNbO(3) buried waveguide.
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.
Gawith
C B
CB
Shepherd
D P
DP
Abernethy
J A
JA
Hanna
D C
DC
Ross
G W
GW
Smith
P G
PG