Effect of plasma etching on optical breakdown threshold of nonlinear ZnGeP2 crystals in wavelength region ~ 2.1 μm
Studies of the effect of plasma cleaning of the surface on the optical stability of monocrystal ZnGeP2 were carried out. A change in the threshold of optical breakdown was established at various parameters of plasma cleaning of the surface of crystals. When a polished ZnGeP2 surface is exposed to low-temperature plasma in an atmosphere with an electron concentration of 1014-1015 cm-3 at a voltage of 13-20 kV and a pulse repetition rate of 50-100 Hz, a 30% increase in the optical breakdown threshold of samples is observed during 500 000 pulses with ~ 40 ns duration.
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Keywords
optical breakdown, ZnGeP2, parametric light generatorsAuthors
| Name | Organization | |
| Yudin Nikolai N. | Tomsk State University; LLC Laboratory of Optical Crystals | rach3@yandex.ru |
| Sosnin Eduard A. | Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences | badik@loi.hcei.tsc.ru |
| Beloplotov Dmitry V. | Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences | rff.qep.bdim@gmail.com |
| Sorokin Dmitry A. | Institute of High Current Electronics of the Siberian Branch of the Russian Academy of Sciences | sdma-70@loi.hcei.tsc.ru |
| Kuznetsov Vladimir S. | Tomsk State University; LLC Laboratory of Optical Crystals | robert_smith_93@mail.ru |
| Antipov Oleg L. | Institute of Applied Physics of the Russian Academy of Sciences | antipov@ipfran.ru |
| Slyunko Elena S. | Tomsk State University; LLC Laboratory of Optical Crystals | elenohka266@mail.ru |
| Zinoviev Mikhail M. | Tomsk State University; LLC Laboratory of Optical Crystals | muxa9229@gmail.com |
| Podzyvalov Sergey N. | Tomsk State University; LLC Laboratory of Optical Crystals | cginen@yandex.ru |
| Kalsin Andrey Yu. | Tomsk State University; LLC Laboratory of Optical Crystals | andrejkalsin@gmail.com |
| Gabdrakhmanov Akmal Sh. | Tomsk State University; LLC Laboratory of Optical Crystals | realist98937@mail.ru |
| Lysenko Aleksey B. | Tomsk State University; LLC Laboratory of Optical Crystals | festality@yandex.ru |
| Kulesh Maxim M. | Tomsk State University | dv472@mail.ru |
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Effect of plasma etching on optical breakdown threshold of nonlinear ZnGeP2 crystals in wavelength region ~ 2.1 μm | Izvestiya vuzov. Fizika. 2025. № 5. DOI: 10.17223/00213411/68/5/7
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