SurfaceScience21 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 11: Poster Session I: Plasmonics and nanooptics I

O 11.7: Poster

Montag, 1. März 2021, 10:30–12:30, P

Design of periodic structures by surface plasmon polaritons excitation — •Pavel N. Terekhin¹, Jens Oltmanns², Andreas Blumenstein², Dmitry S. Ivanov^1,3,4, Frederick Kleinwort², Martin E. Garcia³, Baerbel Rethfeld¹, Juergen Ihlemann², and Peter Simon² — ¹Department of Physics and Research Center OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany — ²Institut für Nanophotonik Göttingen e.V., 37077 Göttingen, Germany — ³Theoretical Physics Department, University of Kassel, 34132 Kassel, Germany — ⁴Quantum Electronics Division, Lebedev Physical Institute, 119991 Moscow, Russia

Laser irradiation of solids can lead to the spontaneous formation of periodic structures on the surface. They are known as laser-induced periodic surface structures (LIPSS) and have unique properties with a broad spectrum of applications. For their controlled fabrication, it is essential to understand the basic governing mechanisms of energy deposition.

We demonstrate the influence of surface plasmon polaritons (SPP) on the process of LIPSS formation after irradiation of a step edge structure in a single-pulse experiment. The absorption of laser energy is described by an analytical source term, which considers the excitation of SPP. The further surface structures development is traced by a hybrid atomistic-continuum model. The theoretical predictions are fully confirmed by experimental observations. The developed method can be used to study the mechanisms of laser energy absorption and to design surface structures under controlled conditions.