| Thermal character in organic polymers with nanojoule femtosecond laser ablation |
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| 作者姓名： | 倪晓昌 王清月 栗岩峰 胡明列 王专 柴路 |
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| 作者单位： | Key Laboratory of Optoelectronic Information Technical Science，EMC，Ultrafast Laser Laboratory，School of Precision Instruments and Optoelectronics Engineering，Tianjin University，Tianjin 300072，Key Laboratory of Optoelectronic Information Technical Science，EMC，Ultrafast Laser Laboratory，School of Precision Instruments and Optoelectronics Engineering，Tianjin University，Tianjin 300072，Key Laboratory of Optoelectronic Information Technical Science，EMC，Ultrafast Laser Laboratory，School of Precision Instruments and Optoelectronics Engineering，Tianjin University，Tianjin 300072，Key Laboratory of Optoelectronic Information Technical Science，EMC，Ultrafast Laser Laboratory，School of Precision Instruments and Optoelectronics Engineering，Tianjin University，Tianjin 300072，Key Laboratory of Optoelectronic Information Technical Science，EMC，Ultrafast Laser Laboratory，School of Precision Instruments and Optoelectronics Engineering，Tianjin University，Tianjin 300072，Key Laboratory of Optoelectronic Information Technical Science，EMC，Ultrafast Laser Laboratory，School of Precision Instruments and Optoelectronics Engineering，Tianjin University，Tianjin 300072 |
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| 基金项目： | This work was supported by the National Key Basic Research Special。Foundation（NKBRSF）（NO．G1999075201） and the National Natural Science Founda－tion of China (No． 60278003）． |
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| 摘 要： | Ablation experiments with femtosecond (fs) laser pulse (pulse duration 37 fs, wavelength 800 nm) on organic polymers have been performed in air. The ablation threshold is found to be only several nanojoules. The diameters of the dots ablated in the organic polymers are influenced by the laser fluence and the number of laser pulses. It is observed that heat is diffused in a threadlike manner in all directions around the central focus region.Explanations of the observed phenomena are presented. A one-dimensional waveguide is also ablated in the organic polymers.
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Thermal character in organic polymers with nanojoule femtosecond laser ablation |
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| Abstract: | Ablation experiments with femtosecond (fs) laser pulse (pulse duration 37 fs, wavelength 800 nm) on organic polymers have been performed in air. The ablation threshold is found to be only several nanojoules. The diameters of the dots ablated in the organic polymers are influenced by the laser fluence and the number of laser pulses. It is observed that heat is diffused in a threadlike manner in all directions around the central focus region. Explanations of the observed phenomena are presented. A one-dimensional waveguide is also ablated in the organic polymers. |
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