Mid-infrared cascaded parametric source in 6 μm region for medical applications

All-diode-pumped parametric source generating 5ns pulses tunable in 6.27μm-8.12μm with high-spatial-quality beam and the pulse energy of 0.9 mJ is demonstrated. The device exploits large-aperture PPRKTP MOPA for pumping ZGP OPO in a RISTRA cavity.