2024/02/28 by Ágnes Nagyné Szokol, Szokol, Ágnes Nagyné, Judit Kámán +33
Engineering · #FOS: Physical sciences #Nonlinear Optical Materials Studies #Optical Polarization and Ellipsometry #Optics (physics.optics) #Plasma Physics (physics.plasm-ph)
paper · pdf · doi:10.48550/arxiv.2402.18138
openalex publication_date 2024/02/28 · openalex created_date 2024/03/05 · openalex updated_date 2026/08/01
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.