Zusammenfassung: | |
With the ever-increasing laser power and repetition rate, thermal control of laser media is becoming increasingly important. Except for widely used air cooling or a bonded heat sink, water cooling of a laser medium is more effective in removing waste heat. However, how to protect deliquescent laser media from water erosion is a challenging issue. Here, novel waterproof coatings were proposed to shield Nd:Glass from water erosion. After clarifying the dependence of the waterproof property of single layers on their microstructures and pore characteristics, nanocomposites that dope SiO 2 in HfO 2 were synthesized using an ion-assisted co-evaporation process to solve the issue of a lack of a high-index material that simultaneously has a dense amorphous microstructure and wide bandgap. Hf 0.7 Si 0.3 O 2 /SiO 2 multifunctional coatings were finally shown to possess an excellent waterproof property, high laser-induced damage threshold (LIDT) and good spectral performance, which can be used as the enabling components for thermal control in high-power laser cavities.
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Lizenzbestimmungen: | CC BY 4.0 Unported - https://creativecommons.org/licenses/by/4.0/ |
Publikationstyp: | Article |
Publikationsstatus: | publishedVersion |
Erstveröffentlichung: | 2019 |
Schlagwörter (englisch): | Erosion, Hafnium oxides, High power lasers, Laser damage, Laser resonators, Microstructure, Silica, SiO2 nanoparticles, Thermal variables control, Waste heat, Waterproofing, Co-evaporations, High Index materials, Laser induced damage thresholds, Multifunctional coatings, Pore characteristics, Repetition rate, Spectral performance, Thermal control, Waterproof coatings |
Fachliche Zuordnung (DDC): | 530 | Physik |
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