Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

The Influence of the Angstrom-scale Roughness on the Laser-induced Damage Threshold of the ZnGeP2 Single Crystal

Nikolai Yudin
* ,
Andrey Khudoley
,
Mikhail Zinoviev
ORCID logo ,
Sergey Podzvalov
ORCID logo ,
Elena Slyunko
,
Elena Zhuravleva
,
Maksim Kulesh
,
Gennadij Gorodkin
,
Pavel Kumeisha
,
Oleg Antipov
Version 1 : Received: 27 November 2021 / Approved: 30 November 2021 / Online: 30 November 2021 (11:50:44 CET)

A peer-reviewed article of this Preprint also exists.

Yudin, N.; Khudoley, A.; Zinoviev, M.; Podzvalov, S.; Slyunko, E.; Zhuravleva, E.; Kulesh, M.; Gorodkin, G.; Kumeysha, P.; Antipov, O. The Influence of Angstrom-Scale Roughness on the Laser-Induced Damage Threshold of Single-Crystal ZnGeP2. Crystals 2022, 12, 83. Yudin, N.; Khudoley, A.; Zinoviev, M.; Podzvalov, S.; Slyunko, E.; Zhuravleva, E.; Kulesh, M.; Gorodkin, G.; Kumeysha, P.; Antipov, O. The Influence of Angstrom-Scale Roughness on the Laser-Induced Damage Threshold of Single-Crystal ZnGeP2. Crystals 2022, 12, 83.

Abstract

Magnetorheological processing was applied to polish the working surfaces of the ZnGeP2 single crystal, in which a non-aqueous liquid with magnetic particles of carbonyl iron with the addition of nanodiamonds was used. Samples of a single crystal ZnGeP2 with an angstrom level of surface roughness were received. the use of MRP has allowed more accurately characterizing possible structural defects that have emerged on the surface of a single crystal and have a size of ~ 0.5-1.5 μm. the LIDT value at the indicated or-ders of magnitude of the surface roughness parameters is determined not by the quality of polishing, but by the number of point depressions caused by physical limitations of the structural configuration of the crystal volume. These results are in good agreement with the assumption made about a significant effect of the concentration of dislocations in a ZnGeP2 crystal on LIDT.

Keywords

Laser induces damage threshold; ZnGeP2; Magnetorheological polish

Subject

Physical Sciences, Optics and Photonics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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