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Influence of the Characteristics of Multilayer Interference Antireflection Coatings Based on Nb, Si, and Al Oxides on the Laser-Induced Damage Threshold of $ZnGeP_{2}$ Single Crystal
| Content Provider | MDPI |
|---|---|
| Author | Yudin, Nikolai Nikolayevich Zinoviev, Mikhail Gladkiy, Vladislav Moskvichev, Evgeny Kinyaevsky, Igor Podzyvalov, Sergey Slyunko, Elena Zhuravleva, Elena Pfaf, Anastasia Yudin, Nikolai Aleksandrovich Kulesh, Maxim |
| Copyright Year | 2021 |
| Description | In this work, the effect of the defect structure and the parameters of antireflection interference coatings based on alternating layers of $Nb_{2}O_{5}/Al_{2}O_{3}$ and $Nb_{2}O_{5}/SiO_{2}$ layers on the laser-induced damage threshold of ZGP crystals under the action of Ho:YAG laser radiation at a wavelength of 2.097 μm was determined. Coating deposition was carried out using the ion-beam sputtering method. The laser-induced damage threshold of the sample with a coating based on alternating layers $Nb_{2}O_{5}$ and $SiO_{2}$ was $W_{0d}$ = 1.8 $J/cm^{2}$. The laser-induced damage threshold of the coated sample based on alternating layers of $Nb_{2}O_{5}$ and $Al_{2}O_{3}$ was $W_{0d}$ = 2.35 $J/cm^{2}$. It has been found that the presence of silicon conglomerates in an interference antireflection coating leads to a decrease in the laser-induced damage threshold of a nonlinear crystal due to local mechanical stresses and the scattering of incident laser radiation. |
| Starting Page | 1549 |
| e-ISSN | 20734352 |
| DOI | 10.3390/cryst11121549 |
| Journal | Crystals |
| Issue Number | 12 |
| Volume Number | 11 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-12-10 |
| Access Restriction | Open |
| Subject Keyword | Crystals Nuclear Energy and Engineering Laser-induced Damage Threshold Zngep2 Interference Coating |
| Content Type | Text |
| Resource Type | Article |
