Power scaling of a non-resonant optical parametric oscillator based on periodically poled LiNbO₃ with spectral...

Using a Volume-Bragg-Grating at the signal wavelength in a periodically-poled LiNbO₃ non-resonant optical parametric oscillator we achieve a total average power of 11.35 W at 20 kHz corresponding to a conversion efficiency of 63%. The measured signal and idler bandwidths amount to 0.7 and 0.9 nm at ∼1922 and ∼2384 nm, respectively. The spectral features are well reproduced by numerical modeling in the plane-wave approximation taking into account pump depletion and back conversion.