{"title":"Damage performance of alumina ceramic by femtosecond laser induced air filamentation","authors":"","doi":"10.1016/j.optlastec.2024.111781","DOIUrl":null,"url":null,"abstract":"<div><p>Hard and brittle materials, such as ceramics, are extensively utilized in defense and military protection. Studies on laser damage to ceramic materials have garnered significant attention, with a focus on efficient disruption over long-range. The femtosecond laser filamentation allows energy transfer on the order of kilometers, providing a unique advantage for applications requiring long-distance destruction. However, the interaction mechanism between femtosecond laser filamentation with hard and brittle materials remains unclear. This study initially simulates the interaction of femtosecond lasers with alumina ceramics at various pulse energies using the two-temperature equation. The results reveal the variation in electron and lattice temperature under the irradiation of femtosecond laser. Subsequently, the damage performance caused by femtosecond laser filamentation on ceramic materials, considering various pulse energies, filament positions, and ablation times are systematically investigated. Additionally, at a pulse energy of 4 mJ, the filament length focused by a 500 mm lens can extend up to 25 mm, resulting in an ablation hole with a diameter of 340 µm and a depth of 440 µm along the middle part of the filament. The power-clamping effect ensures uniform damage hole morphology and size across the entire filament, attributable to the constant filament diameter and plasma intensity. This elucidates the damage mechanism of filaments and adequately validates the effectiveness of this method, establishing a theoretical foundation for investigating laser remote damage of hard and brittle materials.</p></div>","PeriodicalId":19511,"journal":{"name":"Optics and Laser Technology","volume":null,"pages":null},"PeriodicalIF":4.6000,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optics and Laser Technology","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0030399224012398","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Hard and brittle materials, such as ceramics, are extensively utilized in defense and military protection. Studies on laser damage to ceramic materials have garnered significant attention, with a focus on efficient disruption over long-range. The femtosecond laser filamentation allows energy transfer on the order of kilometers, providing a unique advantage for applications requiring long-distance destruction. However, the interaction mechanism between femtosecond laser filamentation with hard and brittle materials remains unclear. This study initially simulates the interaction of femtosecond lasers with alumina ceramics at various pulse energies using the two-temperature equation. The results reveal the variation in electron and lattice temperature under the irradiation of femtosecond laser. Subsequently, the damage performance caused by femtosecond laser filamentation on ceramic materials, considering various pulse energies, filament positions, and ablation times are systematically investigated. Additionally, at a pulse energy of 4 mJ, the filament length focused by a 500 mm lens can extend up to 25 mm, resulting in an ablation hole with a diameter of 340 µm and a depth of 440 µm along the middle part of the filament. The power-clamping effect ensures uniform damage hole morphology and size across the entire filament, attributable to the constant filament diameter and plasma intensity. This elucidates the damage mechanism of filaments and adequately validates the effectiveness of this method, establishing a theoretical foundation for investigating laser remote damage of hard and brittle materials.
期刊介绍:
Optics & Laser Technology aims to provide a vehicle for the publication of a broad range of high quality research and review papers in those fields of scientific and engineering research appertaining to the development and application of the technology of optics and lasers. Papers describing original work in these areas are submitted to rigorous refereeing prior to acceptance for publication.
The scope of Optics & Laser Technology encompasses, but is not restricted to, the following areas:
•development in all types of lasers
•developments in optoelectronic devices and photonics
•developments in new photonics and optical concepts
•developments in conventional optics, optical instruments and components
•techniques of optical metrology, including interferometry and optical fibre sensors
•LIDAR and other non-contact optical measurement techniques, including optical methods in heat and fluid flow
•applications of lasers to materials processing, optical NDT display (including holography) and optical communication
•research and development in the field of laser safety including studies of hazards resulting from the applications of lasers (laser safety, hazards of laser fume)
•developments in optical computing and optical information processing
•developments in new optical materials
•developments in new optical characterization methods and techniques
•developments in quantum optics
•developments in light assisted micro and nanofabrication methods and techniques
•developments in nanophotonics and biophotonics
•developments in imaging processing and systems