Surface structuring of Kapton polyimide with femtosecond and picosecond IR laser pulses

0519340 - FZÚ 2020 RIV US eng J - Journal Article
Hrabovský, Jan - Liberatore, Chiara - Mirza, M. Inam - Sládek, Juraj - Beránek, Jiří - Bulgakov, Alexander - Bulgakova, Nadezhda M.
Surface structuring of Kapton polyimide with femtosecond and picosecond IR laser pulses.
Interfacial Phenomena and Heat Transfer. Roč. 7, č. 2 (2019), s. 113-121. ISSN 2169-2785
R&D Projects: GA MŠMT EF15_003/0000445; GA MŠMT EF15_006/0000674; GA MŠMT LO1602
Grant - others:OP VVV - BIATRI(XE) CZ.02.1.01/0.0/0.0/15_003/0000445; OP VVV - HiLASE-CoE(XE) CZ.02.1.01/0.0/0.0/15_006/0000674
Institutional support: RVO:68378271
Keywords : polymers * polyimide * ultrashort laser pulses * laser processing * laser ablation * damage threshold * crater profile * swelling * multiphoton absorption
OECD category: Optics (including laser optics and quantum optics)
Method of publishing: Limited access
https://doi.org/10.1615/interfacphenomheattransfer.2019031067

Pulsed laser ablation is one of the most efficient and clean methods for high-precision processing and modification of polymers and biomaterials. Polymer ablation has been extensively investigated with ultraviolet lasers while little attention has been given to the infrared (IR) region, which becomes particularly interesting with the recent advances in ultrashort laser technologies. Here, we report the results of a comparative study on 1030-nm ultrashort laser structuring of Kapton polyimide, a polymer important in a variety of applications, with direct comparison of 247-fs and 7-ps laser pulses. The laser-induced damage thresholds for both pulse durations have been determined and the femtosecond laser threshold has been found to be considerably lower than that for picosecond pulses (by a factor of ~ 3.5). Both femtosecond and picosecond laser–produced craters have been thoroughly investigated as a function of pulse energy and focusing conditions.
Permanent Link: http://hdl.handle.net/11104/0304339