A LiNbO3 optical parametric oscillator (OPO) continuously and (or) discretely tunable in a spectral range 1.4-4.24 µm (with discrete tuning from 0 to 12 nm) has been designed. The OPO ring circuit provides output power up to 45 mJ with a bandwidth of 3.5 cm-1. A Fabry-Perrot etalon introduced into the OPO narrows the bandwidth down to 0.7 cm-1.
infrared, nonlinear crystals, parametric light generator, step engine, Fabry-Perot standard, personal computer, ADT