Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

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
* ORCID logo ,
Victor Dyomin
ORCID logo ,
Alexander Gribenyukov
,
Oleg Antipov
,
Andrei Khudoley
,
Igor O. Kinyaevskiy
ORCID logo ,
Mikhail Zinovev
ORCID logo ,
Sergey Podzyvalov
ORCID logo ,
Vladimir Kuznetsov
ORCID logo ,
Elena Slyunko
,
Alexey Lysenko
,
Andrey Kalsin
,
Ilya Eranov
,
Houssain Baalbaki
Version 1 : Received: 14 November 2023 / Approved: 14 November 2023 / Online: 14 November 2023 (10:47:11 CET)
Version 2 : Received: 22 November 2023 / Approved: 23 November 2023 / Online: 23 November 2023 (04:52:06 CET)

A peer-reviewed article of this Preprint also exists.

Yudin, N.Y.N.; Dyomin, V.; Gribenyukov, A.; Antipov, O.; Khudoley, A.; Kinyaevskiy, I.O.; Zinovev, M.; Podzyvalov, S.; Kuznetsov, V.; Slyunko, E.; Lysenko, A.; Kalsin, A.; Eranov, I.; Baalbaki, H. Physical and Technological Aspects of Laser-Induced Damage of ZGP Single Crystals under Periodically Pulsed Laser Irradiation at 2.1 μm. Photonics 2023, 10, 1364. Yudin, N.Y.N.; Dyomin, V.; Gribenyukov, A.; Antipov, O.; Khudoley, A.; Kinyaevskiy, I.O.; Zinovev, M.; Podzyvalov, S.; Kuznetsov, V.; Slyunko, E.; Lysenko, A.; Kalsin, A.; Eranov, I.; Baalbaki, H. Physical and Technological Aspects of Laser-Induced Damage of ZGP Single Crystals under Periodically Pulsed Laser Irradiation at 2.1 μm. Photonics 2023, 10, 1364.

Abstract

Nonlinear properties of zinc germanium diphosphide (ZGP) crystals enable their ap-plications in powerful mid-IR optical parametric oscillators and second-harmonic generators. This paper summarizes mechanisms of the laser induced damage (LID) in 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 Harbin Institute of Technology, China. The impact of processing techniques and the post-growing methods for polishing and anti-reflection coating 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 is discussed. The impact of the test laser parameters on the LID threshold is analyzed. The transient area near the LID threshold obtained using digital holography is ana-lyzed. Influence of the pre-damage processes on the optical parametric oscillations is reported. Prospects for improving ZGP crystals to further increase the LID threshold are discussed.

Keywords

ZGP; single crystal; laser induced damage threshold; mid-IR optical parametric oscillators and generators; Ho3+:YAG lasers

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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