Journal ArticleDOI
On the role of surface plasmon polaritons in the formation of laser-induced periodic surface structures upon irradiation of silicon by femtosecond-laser pulses
TLDR
In this paper, the formation of nearly wavelength-sized laser-induced periodic surface structures (LIPSSss) on single-crystalline silicon upon irradiation with single or multiple femtosecond-laser pulses (pulse duration τ=130Abstract:
The formation of nearly wavelength-sized laser-induced periodic surface structures (LIPSSs) on single-crystalline silicon upon irradiation with single or multiple femtosecond-laser pulses (pulse duration τ=130 fs and central wavelength λ=800 nm) in air is studied experimentally and theoretically. In our theoretical approach, we model the LIPSS formation by combining the generally accepted first-principles theory of Sipe and co-workers with a Drude model in order to account for transient intrapulse changes in the optical properties of the material due to the excitation of a dense electron-hole plasma. Our results are capable to explain quantitatively the spatial periods of the LIPSSs being somewhat smaller than the laser wavelength, their orientation perpendicular to the laser beam polarization, and their characteristic fluence dependence. Moreover, evidence is presented that surface plasmon polaritons play a dominant role during the initial stage of near-wavelength-sized periodic surface structures in fem...read more
Citations
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Book ChapterDOI
Instabilities and Structure Formation
TL;DR: The appearance of an instability is related to positive feedbacks between different characteristics (degrees of freedom) in laser-matter interactions as discussed by the authors, which can lead to spontaneous formation of periodic or stochastic dissipative structures, spiral waves, and many other structures with broken or unbroken symmetry.
Dissertation
Lasergenerierte funktionale Nanopartikel-Polymer-Komposite als Ionenfreisetzungssysteme für medizinische Anwendungen
TL;DR: In this paper, the Herstellung eines Kompositmaterials with lasergenerierten Nanopartikeln als Ionendepot, in situ eingebettet in eine Copolymermatrix, auf rein wassriger Basis durchgefuhrt.
Journal ArticleDOI
Fundamentals of Scanning Surface Structuring by Ultrashort Laser Pulses: From Electron Diffusion to Final Morphology
Fabian Nyenhuis,P.N. Terekhin,T. Menold,Baerbel Rethfeld,Andreas Michalowski,Johannes A. L'huillier +5 more
TL;DR: In this paper , a hierarchical structural formation model that bridges the gap between laser-induced periodic surface structures and surface degradation is presented, which provides a deeper understanding of the microscopic mechanisms involved in surface structuring with ultrashort pulses.
Journal ArticleDOI
Scan-path dependence of surface ripples on Si thin films induced by laser irradiation with an asymmetric Gaussian beam
TL;DR: In this paper, a linearly polarized nanosecond laser was used to irradiate amorphous-Si thin film (50nm thickness) on a glass substrate at a repetition rate of 14 kHz and a pulse duration of 5.5 nns.
Journal ArticleDOI
Synthesis of ultra-thin oxide layer in laser-treated 3× (Al/Fe)/Si multilayer structure
Suzana Petrović,Biljana M. Gaković,Janez Kovač,Peter Panjan,Emmanuel Stratakis,Emmanuel Stratakis,Milan S. Trtica,Costas Fotakis,Costas Fotakis,B. M. Jelenković +9 more
TL;DR: In this article, the conditions of ultra-thin oxide films synthesized as the Al/Fe multilayer structures after the surface treatment with femtosecond laser radiation were studied.
References
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Book
Handbook of Optical Constants of Solids
TL;DR: In this paper, E.D. Palik and R.R. Potter, Basic Parameters for Measuring Optical Properties, and W.W.Hunter, Measurement of Optical Constants in the Vacuum Ultraviolet Spectral Region.
Journal ArticleDOI
Laser-induced periodic surface structure. I. Theory
TL;DR: In this paper, a theory for laser-induced periodic surface structure was developed by associating each Fourier component of induced structure with the corresponding Fourier components of inhomogeneous energy deposition just beneath the surface.
Journal ArticleDOI
Femtosecond laser ablation of silicon–modification thresholds and morphology
TL;DR: In this article, the initial modification and ablation of crystalline silicon with single and multiple Ti:sapphire laser pulses of 5 to 400 fs duration was investigated, and the authors found the phenomena amorphization, melting, re-crystallization, nucleated vaporization, and Ablation to occur with increasing laser fluence down to the shortest pulse durations.
Journal ArticleDOI
Generation of dense electron-hole plasmas in silicon
TL;DR: In this paper, the authors studied the generation of dense electron-hole plasmas in silicon with intense 100-fs laser pulses by time-resolved measurements of the optical reflectivity at 625 nm.