Visualization and characterization of pre-breakdown processes in the volume of a ZnGeP2 single crystal during parametric generation of radiation in the wavelength range of 3.5–5 μm when pumped by Ho: YAG laser radiation
The energy characteristics and the results of visualization of processes occurring in the volume of a crystal recorded with a digital holographic camera have been studied. It is established that the parametric generation efficiency ceases to increase when the pump energy density exceeds 1 J/cm2 , and darkening of the laser radiation propagation channel in the crystal volume is observed. It is also shown that the transmission of laser radiation decreases when the energy densities exceed 1 J/cm2.
Russian physics journal. 2023. Vol. 65, № 12. P. 2130-2136
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eng
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Visualization and characterization of pre-breakdown processes in the volume of a ZnGeP2 single crystal during parametric generation of radiation in the wavelength range of 3.5–5 μm when pumped by Ho: YAG laser radiation