{"title":"On the differences between the beam interaction characteristics of CO 2, Nd:YAG, excimer and high power diode lasers with a SiO 2/Al 2O 3 ceramic","authors":"J. Lawrence, Lin Li","doi":"10.1080/08981500220151756","DOIUrl":null,"url":null,"abstract":"By using a number of techniques and approaches certain differences between the beam interaction characteristics of CO 2 laser, a Nd:YAG laser, a high power diode laser (HPDL) and an excimer laser with a SiO 2 /Al 2 O 3 ceramic have been investigated. By employing a derivative of Beer-Lambert's law, the laser beam absorption lengths of the four lasers were calculated as 470 - 22 µm for the CO 2 laser, 195 - 12 µm for the Nd:YAG laser, 177 - 15 µm for the HPDL and 7.5 - 19 µm for the excimer laser. The fluence threshold values at which significant material removal occurs the CO 2 laser, Nd:YAG laser, HPDL and excimer laser were found to be 68, 128, 181 and 0.12 J cm m 2 , respectively. Absorptivity measurements revealed that there is no correlation between the actual absorptivity of the SiO 2 /Al 2 O 3 ceramic and the absorption length for each of the four lasers. The thermal loading values for the CO 2 laser, the, Nd:YAG laser, the HPDL and the excimer laser were determined as 2.57, 6.73, 9.83 and 22.24 kJ...","PeriodicalId":49918,"journal":{"name":"Lasers in Engineering","volume":"50 1","pages":"81-93"},"PeriodicalIF":0.6000,"publicationDate":"2002-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"8","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Lasers in Engineering","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1080/08981500220151756","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 8
Abstract
By using a number of techniques and approaches certain differences between the beam interaction characteristics of CO 2 laser, a Nd:YAG laser, a high power diode laser (HPDL) and an excimer laser with a SiO 2 /Al 2 O 3 ceramic have been investigated. By employing a derivative of Beer-Lambert's law, the laser beam absorption lengths of the four lasers were calculated as 470 - 22 µm for the CO 2 laser, 195 - 12 µm for the Nd:YAG laser, 177 - 15 µm for the HPDL and 7.5 - 19 µm for the excimer laser. The fluence threshold values at which significant material removal occurs the CO 2 laser, Nd:YAG laser, HPDL and excimer laser were found to be 68, 128, 181 and 0.12 J cm m 2 , respectively. Absorptivity measurements revealed that there is no correlation between the actual absorptivity of the SiO 2 /Al 2 O 3 ceramic and the absorption length for each of the four lasers. The thermal loading values for the CO 2 laser, the, Nd:YAG laser, the HPDL and the excimer laser were determined as 2.57, 6.73, 9.83 and 22.24 kJ...
期刊介绍：
Lasers in Engineering publishes original (primary) research articles, reviews, short communications and letters on all aspects relating to the application of lasers in the many different branches of engineering and related disciplines.
The topics covered by Lasers in Engineering are the use of lasers: in sensors or measuring and for mapping devices; in electrocomponent fabrication; for materials processing; as integral parts of production assemblies; within the fields of biotechnology and bioengineering; in micro- and nanofabrication; as well as the materials and processing aspects of techniques such as cutting, drilling, marking, cladding, additive manufacturing (AM), alloying, welding and surface treatment and engineering.
Lasers in Engineering presents a balanced account of future developments, fundamental aspects and industrial innovations driven by the deployment of lasers. Modern technology has a vitally important role to play in meeting the increasingly stringent demands made on material and production systems. Lasers in Engineering provides a readily accessible medium for the rapid reporting of new knowledge, and technological and scientific advances in these areas.
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