Low-threshold femtosecond optical parametric oscillator based on chirped-pulse frequency conversion.
We report what is to our knowledge the first demonstration of a femtosecond optical parametric oscillator based on chirped-pulse frequency conversion in a long crystal of aperiodically poled potassium titanyl phosphate. The minimum pump threshold power was 15 mW, and a signal slope efficiency of 35% was achieved. Continuous tuning from 1190 to 1450 nm was obtained for an average pump power of 800 mW.
Tillman
K A
KA
Ultrafast Optics Group, Department of Physics, Heriot-Watt University, Riccarton, Edinburgh EH14 4AS, UK.
Reid
D T
DT
Artigas
D
D
Hellström
J
J
Pasiskevicius
V
V
Laurell
F
F