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

0519340 - FZÚ 2020 RIV US eng J - Článek v odborném periodiku
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
Grant CEP: GA MŠMT EF15_003/0000445; GA MŠMT EF15_006/0000674; GA MŠMT LO1602
Grant ostatní: 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
Institucionální podpora: RVO:68378271
Klíčová slova: polymers * polyimide * ultrashort laser pulses * laser processing * laser ablation * damage threshold * crater profile * swelling * multiphoton absorption
Obor OECD: Optics (including laser optics and quantum optics)
Způsob publikování: Omezený přístup
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.
Trvalý link: http://hdl.handle.net/11104/0304339