Pulsed laser intensity dependence of crater formation and light
  reflection in the UDMA-TEGDMA copolymer nanocomposite, doped with resonant
  plasmonic gold nanorods

Szokol, Ágnes Nagyné; Kámán, Judit; Holomb, Roman; Aladi, Márk; Kedves, Miklós; Ráczkevi, Béla; Rácz, Péter; Bonyár, Attila; Borók, Alexandra; Zangana, Shereen; Szalóki, Melinda; Papp, István; Galbács, Gábor; Biró, Tamás S.; Csernai, László P.; Kroó, Norbert; Veres, Miklós; Collaboration, NAPLIFE

doi:10.48550/arXiv.2402.18138

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Pulsed laser intensity dependence of crater formation and light reflection in the UDMA-TEGDMA copolymer nanocomposite, doped with resonant plasmonic gold nanorods

preprint

posted on 2024-03-01, 17:00 authored by Ágnes Nagyné Szokol, Judit Kámán, Roman Holomb, Márk Aladi, Miklós Kedves, Béla Ráczkevi, Péter Rácz, Attila Bonyár, Alexandra Borók, Shereen Zangana, Melinda Szalóki, István Papp, Gábor Galbács, Tamás S. Biró, László P. Csernai, Norbert Kroó, Miklós Veres, NAPLIFE Collaboration

Plasmonic nanoparticles embedded into a solid matrix could play crucial role in laser-matter interactions. In this study, excess energy creation was observed during the single-shot irradiation of a polymer matrix containing plasmonic gold nanorods, resonant to the laser wavelength, with a high intensity femtosecond laser pulse. This effect was manifested in a 7-fold rise in the crater volume for a 1.7-fold increase of the laser intensity, and was absent in the pure polymer without the gold doping. It occurred at laser intensities > 1.5 x 1017 W/cm2, being the vanishing threshold of plasma mirror formation, resulting in a more than 80% increase of the amount of laser light entering the target. This threshold was found to be critical for the plasmonic effect of gold nanoantennas tuned to the wavelength of the laser on the crater formation.