Impact of plasmonic modes on the formation of self-organized nano-patterns in thin films

Lingos, P. C.; Perrakis, George; Tsilipakos, Odysseas; Tsibidis, George D.; Stratakis, Emmanuel

doi:10.1016/j.optlastec.2023.109415

Cited by 6 publications

(1 citation statement)

References 43 publications

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“…[ 50,51 ] Irradiation of thin films may enable additional possibilities of forming sub‐wavelength structures, e.g., when the thin film geometry, transient material properties and excitation conditions allow the coupling of SPPs from the front and rear interfaces. [ 52–55 ]…”

Section: Introductionmentioning

confidence: 99%

Probing Laser‐Driven Structure Formation at Extreme Scales in Space and Time

Bonse,

Sokolowski‐Tinten

2024

Laser & Photonics Reviews

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Irradiation of solid surfaces with high intensity, ultrashort laser pulses triggers a variety of secondary processes that can lead to the formation of transient and permanent structures over a large range of length scales from mm down to the nano‐range. One of the most prominent examples are LIPSS – Laser‐Induced Periodic Surface Structures. While LIPSS have been a scientific evergreen for of almost 60 years, experimental methods that combine ultrafast temporal with the required nm spatial resolution have become available only recently with the advent of short pulse, short wavelength free electron lasers. Here, the current status and future perspectives in this field are discussed by exploiting the unique possibilities of these 4th‐generation light sources to address by time‐domain experimental techniques the fundamental LIPSS‐question, namely why and how laser irradiation can initiate the transition of a “chaotic” (rough) surface from an aperiodic into a periodic structure.

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Section: Introductionmentioning

confidence: 99%

Probing Laser‐Driven Structure Formation at Extreme Scales in Space and Time

Bonse,

Sokolowski‐Tinten

2024

Laser & Photonics Reviews

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Impact of Hybrid Electromagnetic Surface Modes on the Formation of Low Spatial Frequency LIPSS: A Universal Approach

Perrakis,

Tsilipakos,

Tsibidis

et al. 2024

Laser & Photonics Reviews

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In this article, the impact of the excited electromagnetic surface modes in a comprehensive investigation of the formation of laser‐induced periodic surface structures (LIPSS) is analyzed. It is demonstrated that the electromagnetic origin of low spatial‐frequency LIPSS (LSFL) is the frequency detuning between propagating and localized modes due to their coupling/hybridization. The influence of the pattern profile, inhomogeneity, and material type on the coupling strength, electric‐field spatial distribution, and associated near‐field scattering are highlighted. Exploiting the potential of the approach, evidence of a universal manifestation of LSFLs is provided irrespective of the material and the authors are able to predict and validate the experimentally‐proven lower limit of LSFL periodicity (i.e., λL/2, where λL stands for the laser wavelength). Furthermore, the analysis of the electromagnetic modes predicts that the periodicity of LSFL is practically unaffected by the laser fluence, while a suppression of LSFL at high excitation levels or large number of pulses is also predicted. It is also shown that plasmonic‐active materials are not necessary for LSFL formation perpendicular to polarization. Toward these directions, an important generic metric, namely the resonance quality factor, is additionally inserted. The approach can, thus, serve as a guide for controlling laser‐induced surface topography.

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