Temperature effects on the geometry during the formation of micro-holes fabricated by femtosecond laser in PMMA
| Autor: | Yaxiang Tian, Yuxin Song, Ji’an Duan, Fan Zhang, Cong Wang, Xinran Dong, Kai Yin |
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| Rok vydání: | 2018 |
| Předmět: |
Fabrication
Materials science Physics::Optics chemistry.chemical_element Geometry 02 engineering and technology Plasma 021001 nanoscience & nanotechnology Laser 01 natural sciences Oxygen Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Pulse (physics) law.invention 010309 optics chemistry Volume (thermodynamics) law 0103 physical sciences Femtosecond Electrical and Electronic Engineering 0210 nano-technology Absorption (electromagnetic radiation) |
| Zdroj: | Optics & Laser Technology. 100:256-260 |
| ISSN: | 0030-3992 |
| DOI: | 10.1016/j.optlastec.2017.10.014 |
| Popis: | In this study, the temperature effects on hole geometry of the PMMA during micro-holes drilling by femtosecond laser has been studied under various pulse energy and number of pulse. The laser-induced hole’s diameter is considerably increased by 73% as the temperature rises from 20 °C to 90 °C. Remarkable enhancement in the removal volume of micro-hole is also observed under high temperature. The possible mechanism for such changes is discussed in detail on account of optical absorption enhancement and higher density of surface plasma. The atomic percentage of oxygen obviously increases with the increase of temperature, which is beneficial to femtosecond laser fabrication of PMMA micro-hole. The spatter area of micro-hole has been found to tremendously extend with the increase of temperature, which is due to recoil pressure effect. These results demonstrate that temperature plays a crucial role to tailor micro-hole fabrication by femtosecond laser. |
| Databáze: | OpenAIRE |
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