A study on laser-fibre coupling efficiency and ablation rate in femtosecond laser deep microdrilling
| Autor: | Benxin Wu, Shuting Lei, Xinwei Shen, Qiumei Bian, Zenghu Chang |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Materials science
business.industry Mechanical Engineering medicine.medical_treatment Pulse duration Ablation Laser Industrial and Manufacturing Engineering law.invention Surface micromachining Optics law Femtosecond medicine Coupling efficiency Focal length Electrical and Electronic Engineering Pulse energy business |
| Zdroj: | International Journal of Mechatronics and Manufacturing Systems. 5:280 |
| ISSN: | 1753-1047 1753-1039 |
| DOI: | 10.1504/ijmms.2012.048232 |
| Popis: | Laser microdrilling is a common micromachining operation in many industrial applications. This paper presents a new laser microdrilling technique in which a hollow-core fibre is employed to transmit femtosecond laser pulses to the target position. The coupling efficiency between the laser and the fibre is investigated and found to be strongly related to pulse energy and pulse duration. A parametric study on the ablation rate indicates that in microdrilling of a stainless steel (type 303), the operating parameters including pulse energy, pulse duration, sample thickness, focal length and sample-fibre distance can affect the ablation rate. The experimental results show that the new technique developed in this study is feasible to conduct microdrilling of holes with high aspect ratio. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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