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.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 12, pp. 80–86, December 2022
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Yudin, N.N., Vlasov, D.V., Antipov, O.L. et al. 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. Russ Phys J 65, 2130–2136 (2023). https://doi.org/10.1007/s11182-023-02881-9
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DOI: https://doi.org/10.1007/s11182-023-02881-9