Thermal character in organic polymers with nanojoule femtosecond laser ablation

Xiaochang Ni; Ching-Yue Wang; Yanfeng Li; Minglie Hu; Zhuan Wang; Lu Chai

Chinese Optics Letters, Volume. 1, Issue 9, 09547(2003)

Xiaochang Ni^1,2, Ching-Yue Wang^1,2, Yanfeng Li^1,2, Minglie Hu^1,2, Zhuan Wang^1,2, and Lu Chai^1,2

¹Key Laboratory of Optoelectronic Information Technical Science, EMC

²Ultrafast Laser Laboratory, School of Precision Instruments and Optoelectronics Engineering, Tianjin University, Tianjin 300072

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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 resented. A one-dimensional waveguide is also ablated in the organic polymers.

Keywords

190.4400 210.4810 230.4000 materials 140.7090 microstructure fabrication nonlinear optics optical storage-recording materials ultrafast lasers

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Xiaochang Ni, Ching-Yue Wang, Yanfeng Li, Minglie Hu, Zhuan Wang, Lu Chai. Thermal character in organic polymers with nanojoule femtosecond laser ablation[J]. Chinese Optics Letters, 2003, 1(9): 09547

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Paper Information

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Received: Apr. 9, 2003

Accepted: --

Published Online: Jun. 6, 2006

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Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology