Energy Characteristics of Radiation in the Wavelength Range 3.3–6.57 μm of an Optical Parametric Oscillator Based on a ZnGeP2 Single Crystal when Pumped by Ho:YAG Laser Radiation

The energy and spectral characteristics of radiation generated using the first type of phase matching in the wavelength range 3.3–6.57 μm by a ZnGeP2 single-crystal optical parametric oscillator pumped by a Ho:YAG laser were studied. The experimentally attained maximal average OPO radiation power was ∼4.63 W at the signal wave at a pulse repetition rate of 10 kHz with a generation efficiency of 44.67% and ∼680 mW at the idler wave at a pulse repetition rate of 10 kHz with an efficiency of ∼6.57%. The developed OPO is promising for medical applications in the field of non-invasive surgery for dual-wave action on human organic tissue for the purpose of tissue ablation.