Physical and Technological Aspects of Laser-Induced Damage of ZGP Single Crystals under Periodically Pulsed Laser Irradiation at 2.1 μm
Nikolay Yudin N. Yudin,
Victor Dyomin,
Alexander Gribenyukov,
Oleg Antipov,
Andrei Khudoley,
Igor O. Kinyaevskiy,
Mikhail Zinovev,
Sergey Podzyvalov,
Vladimir Kuznetsov,
Elena Slyunko,
Alexey Lysenko,
Andrey Kalsin,
Ilya Eranov,
Houssain Baalbaki
Affiliations
Nikolay Yudin N. Yudin
Laboratory of Radiophysical and Optical Methods for Studying the Environment, Radiophysics Department, National Research Tomsk State University, 634050 Tomsk, Russia
Victor Dyomin
Laboratory of Radiophysical and Optical Methods for Studying the Environment, Radiophysics Department, National Research Tomsk State University, 634050 Tomsk, Russia
Alexander Gribenyukov
Technological Laboratory, Institute of Monitoring of Climatic and Ecological Systems, Siberian Branch, Russian Academy of Sciences, 634055 Tomsk, Russia
Oleg Antipov
Institute of Applied Physics of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia
Andrei Khudoley
Institute of Heat and Mass Transfer Named after A.V. Lykov NAS of Belarus, 220072 Minsk, Belarus
Igor O. Kinyaevskiy
Physical Institute of the Russian Academy of Sciences, 119991 Moscow, Russia
Mikhail Zinovev
Laboratory of Radiophysical and Optical Methods for Studying the Environment, Radiophysics Department, National Research Tomsk State University, 634050 Tomsk, Russia
Sergey Podzyvalov
Laboratory of Radiophysical and Optical Methods for Studying the Environment, Radiophysics Department, National Research Tomsk State University, 634050 Tomsk, Russia
Vladimir Kuznetsov
Laboratory of Radiophysical and Optical Methods for Studying the Environment, Radiophysics Department, National Research Tomsk State University, 634050 Tomsk, Russia
Elena Slyunko
Laboratory of Radiophysical and Optical Methods for Studying the Environment, Radiophysics Department, National Research Tomsk State University, 634050 Tomsk, Russia
Alexey Lysenko
Laboratory of Radiophysical and Optical Methods for Studying the Environment, Radiophysics Department, National Research Tomsk State University, 634050 Tomsk, Russia
Andrey Kalsin
Laboratory of Radiophysical and Optical Methods for Studying the Environment, Radiophysics Department, National Research Tomsk State University, 634050 Tomsk, Russia
Ilya Eranov
Institute of Applied Physics of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia
Houssain Baalbaki
Laboratory of Radiophysical and Optical Methods for Studying the Environment, Radiophysics Department, National Research Tomsk State University, 634050 Tomsk, Russia
The nonlinear properties of zinc germanium diphosphide (ZGP) crystals enable their applications in powerful mid-IR optical parametric oscillators and second-harmonic generators. This paper summarizes the mechanisms of the laser-induced damage (LID) of high-purity ZGP crystals under periodically pulsed nanosecond irradiation by a Ho3+:YAG laser at 2.1 μm. The ZGP samples were manufactured by “LOC” Ent., Tomsk, Russia, or the Harbin Institute of Technology, China. The impact of processing techniques and the post-growing methods for polishing and anti-reflective coatings on the LID threshold are discussed. The importance of the defect structure of the crystal lattice and the parameters of transparent coatings for increasing the LID threshold are also discussed. The impact of the test laser parameters on the LID threshold and the transient area near the LID threshold obtained using digital holography are analyzed. The influence of the pre-damage processes on the optical parametric oscillations is reported. Lastly, the prospects for improving ZGP crystals to further increase the LID threshold are discussed.
