Thermal waveguide OPO.
We report a mid-infrared, CW singly resonant optical parametric oscillator (OPO) with a thermally induced waveguide in its gain crystal. We measured a numerical aperture of 0.0062 for the waveguide at 80-W intracavity power at 3.2 microm. This thermal-guiding effect benefits to the stable operation of an OPO and improves the parametric conversion efficiency by more than a factor of two when compared with that without thermal guiding.
Lin
S T
ST
Institute of Photonics Technologies, Department of Electrical Engineering, National Tsing-hua University, Hsinchu, Taiwan.
Lin
Y Y
YY
Wang
T D
TD
Huang
Y C
YC
D000669:Amplifiers, Electronic; D004867:Equipment Design; D019544:Equipment Failure Analysis; D009991:Oscillometry / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D013696:Temperature; D014159:Transducers