Drilling of Copper Using a Dual-Pulse Femtosecond Laser
The drilling of copper using a dual-pulse femtosecond laser with wavelength of 800 nm, pulse duration of 120 fs and a variable pulse separation time (0.1–150 ps) is investigated theoretically. A one-dimensional two-temperature model with temperature-dependent material properties is considered, inclu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2016-02-01
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| Series: | Technologies |
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| Online Access: | http://www.mdpi.com/2227-7080/4/1/7 |
| _version_ | 1819195070088216576 |
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| author | Chung-Wei Cheng Jinn-Kuen Chen |
| author_facet | Chung-Wei Cheng Jinn-Kuen Chen |
| author_sort | Chung-Wei Cheng |
| collection | DOAJ |
| description | The drilling of copper using a dual-pulse femtosecond laser with wavelength of 800 nm, pulse duration of 120 fs and a variable pulse separation time (0.1–150 ps) is investigated theoretically. A one-dimensional two-temperature model with temperature-dependent material properties is considered, including dynamic optical properties and the thermal-physical properties. Rapid phase change and phase explosion models are incorporated to simulate the material ablation process. Numerical results show that under the same total laser fluence of 4 J/cm2, a dual-pulse femtosecond laser with a pulse separation time of 30–150 ps can increase the ablation depth, compared to the single pulse. The optimum pulse separation time is 85 ps. It is also demonstrated that a dual pulse with a suitable pulse separation time for different laser fluences can enhance the ablation rate by about 1.6 times. |
| first_indexed | 2024-12-23T02:06:54Z |
| format | Article |
| id | doaj.art-d6a2d5bb8e02400abfd3fce9b504dd9d |
| institution | Directory Open Access Journal |
| issn | 2227-7080 |
| language | English |
| last_indexed | 2024-12-23T02:06:54Z |
| publishDate | 2016-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Technologies |
| spelling | doaj.art-d6a2d5bb8e02400abfd3fce9b504dd9d2022-12-21T18:03:53ZengMDPI AGTechnologies2227-70802016-02-0141710.3390/technologies4010007technologies4010007Drilling of Copper Using a Dual-Pulse Femtosecond LaserChung-Wei Cheng0Jinn-Kuen Chen1Department of Mechanical Engineering, National Chiao Tung University, No. 1001, Ta Hsueh Road, Hsinchu 30010, TaiwanDepartment of Mechanical and Aerospace Engineering, University of Missouri, Columbia, MO 65211, USAThe drilling of copper using a dual-pulse femtosecond laser with wavelength of 800 nm, pulse duration of 120 fs and a variable pulse separation time (0.1–150 ps) is investigated theoretically. A one-dimensional two-temperature model with temperature-dependent material properties is considered, including dynamic optical properties and the thermal-physical properties. Rapid phase change and phase explosion models are incorporated to simulate the material ablation process. Numerical results show that under the same total laser fluence of 4 J/cm2, a dual-pulse femtosecond laser with a pulse separation time of 30–150 ps can increase the ablation depth, compared to the single pulse. The optimum pulse separation time is 85 ps. It is also demonstrated that a dual pulse with a suitable pulse separation time for different laser fluences can enhance the ablation rate by about 1.6 times.http://www.mdpi.com/2227-7080/4/1/7femtosecond laserdual pulsetwo-temperature model |
| spellingShingle | Chung-Wei Cheng Jinn-Kuen Chen Drilling of Copper Using a Dual-Pulse Femtosecond Laser Technologies femtosecond laser dual pulse two-temperature model |
| title | Drilling of Copper Using a Dual-Pulse Femtosecond Laser |
| title_full | Drilling of Copper Using a Dual-Pulse Femtosecond Laser |
| title_fullStr | Drilling of Copper Using a Dual-Pulse Femtosecond Laser |
| title_full_unstemmed | Drilling of Copper Using a Dual-Pulse Femtosecond Laser |
| title_short | Drilling of Copper Using a Dual-Pulse Femtosecond Laser |
| title_sort | drilling of copper using a dual pulse femtosecond laser |
| topic | femtosecond laser dual pulse two-temperature model |
| url | http://www.mdpi.com/2227-7080/4/1/7 |
| work_keys_str_mv | AT chungweicheng drillingofcopperusingadualpulsefemtosecondlaser AT jinnkuenchen drillingofcopperusingadualpulsefemtosecondlaser |