Surface modification of polymethylmethacrylate irradiated with 60 fs single laser pulses

0333898 - FZÚ 2010 RIV GB eng J - Článek v odborném periodiku
Klinger, D. - Sobierajski, R. - Nietubyc, R. - Krzywinski, J. - Pelka, J. - Juha, Libor - Jurek, M. - Zymierska, D. - Guizard, S. - Merdji, H.
Surface modification of polymethylmethacrylate irradiated with 60 fs single laser pulses.
[Modifikace povrchů poly(methylmetakrylát)u ozářeného 60-fs laserovými impulzy.]
Radiation Physics and Chemistry. Roč. 78, Suppl. 10 (2009), S71-S74. ISSN 0969-806X. E-ISSN 1879-0895
Grant CEP: GA AV ČR KAN300100702; GA MŠMT LC510; GA MŠMT(CZ) LC528; GA MŠMT LA08024; GA AV ČR IAA400100701
Výzkumný záměr: CEZ:AV0Z10100523
Klíčová slova: polymethylmethacrylate (PMMA) * IR laser ablation * femtosecond laser pulse
Kód oboru RIV: BH - Optika, masery a lasery
Impakt faktor: 1.149, rok: 2009

An ablation by a femtosecond laser pulses of poly methyl methacrylate was investigated in the near-infrared region. The morphological changes due to increasing laser fluency were examined. The size and shape as well as morphological forms occurring in the resulted craters were analyzed as a function of irradiation fluency. Various forms of surface modifications in ablated crater i.e. cracks and smaller features like honey-comb-like structures, and ripples with an average period of 800 nm were observed. The threshold fluency for observable changes of the sample surface, the ablation threshold and the threshold fluency for creation of the structure in the centre of the cavity were determined for 60 fs laser pulse. Obtained data were compared with available literature data.

Sledovali jsme ablaci poly(methylmetakrylát) – PMMA blízkými infračervenými (NIR) pulzy z titan-safírového laseru. Na povrchu kráteru vytvořeného laserovým impulzem je řada nerovností a více či méně pravidelných struktur. To odlišuje interakci NIR pulzů od čisté a uniformní ablace indukované XUV laserem.
Trvalý link: http://hdl.handle.net/11104/0178773