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
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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
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Journal ArticleDOI
Surface structures induced by ultrashort laser pulses: Formation mechanisms of ripples and grooves
Shutong He,Shutong He,Jijil Jj Nivas,K. K. Anoop,Antonio Vecchione,Minglie Hu,Riccardo Bruzzese,Salvatore Amoruso +7 more
TL;DR: In this article, a detailed theoretical and experimental analysis of the surface structures induced by ultrashort laser pulses on silicon is presented, which is explained by taking into account the variation of the dielectric constant of the target surface at different excitation levels.
Journal ArticleDOI
Dynamics of the formation of laser-induced periodic surface structures (LIPSS) upon femtosecond two-color double-pulse irradiation of metals, semiconductors, and dielectrics
TL;DR: In this article, two-color double-fs-pulse experiments were performed on Titanium, Silicon and Fused Silica, and their resulting characteristics (periods, areas) were analyzed by scanning electron microscopy.
Journal ArticleDOI
Rippled area formed by surface plasmon polaritons upon femtosecond laser double-pulse irradiation of silicon: the role of carrier generation and relaxation processes
TL;DR: In this paper, the formation of laser-induced periodic surface structures (LIPSS, ripples) upon irradiation of silicon with multiple irradiation sequences consisting of femtosecond laser pulse pairs (pulse duration 150 fs, central wavelength 800 nm) was studied numerically using a rate equation system along with a two-temperature model accounting for one and two-photon absorption and subsequent carrier diffusion and Auger recombination processes.
Journal ArticleDOI
Area dependence of femtosecond laser-induced periodic surface structures for varying band gap materials after double pulse excitation
TL;DR: In this article, the formation of laser-induced periodic surface structures upon irradiation of titanium, silicon, and fused silica with multiple irradiation sequences consisting of parallel polarized Ti:sapphire femtosecond laser pulse pairs (pulse duration 50-150fs, central wavelength ∼800-nm) was studied experimentally.
Journal ArticleDOI
On the physics of self-organized nanostructure formation upon femtosecond laser ablation
TL;DR: In this article, the femtosecond self-organized structure formation (LIPSS) on silicon was shown to turn to much coarser structures at higher dose, and showed the dose dependence of pattern evolution at about threshold fluence.
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.
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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.