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
Citations
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Journal ArticleDOI
Direct Femtosecond Laser Surface Structuring with Optical Vortex Beams Generated by a q-plate.
Jijil Jj Nivas,Shutong He,Shutong He,Andrea Rubano,Antonio Vecchione,Domenico Paparo,Lorenzo Marrucci,Riccardo Bruzzese,Salvatore Amoruso +8 more
TL;DR: This work presents an approach for direct femtosecond laser surface structuring based on optical vortex beams with different spatial distributions of the state of polarization, which are easily generated by means of a q-plate.
Journal ArticleDOI
Large-area, uniform, high-spatial-frequency ripples generated on silicon using a nanojoule-femtosecond laser at high repetition rate
TL;DR: Large-area high-spatial-frequency patterns of λ/6 periodicity have been generated by a nanojoule-femtosecond laser scanning technique at the silicon-air interface with excellent large-area uniformity, allowing reproducible and accurate measurements of the periodicity.
Journal ArticleDOI
Plasmonic formation mechanism of periodic 100-nm-structures upon femtosecond laser irradiation of silicon in water
TL;DR: In this paper, the formation of laser-induced periodic surface structures (LIPSS) upon irradiation of silicon by multiple linearly polarized Ti:sapphire femtosecond laser pulses was studied experimentally in air and water environment.
Journal ArticleDOI
Antireflection effect of femtosecond laser-induced periodic surface structures on silicon
Anatoliy Y. Vorobyev,Chunlei Guo +1 more
TL;DR: This study studies, for the first time, the antireflection effect of this femtosecond laser-induced periodic surface structures (FLIPSSs) in the wavelength range of 250 - 2500 nm.
Journal ArticleDOI
Mechanism of femtosecond-laser-induced periodic nanostructure formation on crystalline silicon surface immersed in water
TL;DR: Pump and probe measurements of the ultrafast change in surface reflectivity during the interaction have demonstrated that the multiple low-fluence fs pulses are crucial to the nanostructuring through the accumulation of non-thermal bonding structure change and the subsequent nanoscale ablation.
References
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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.
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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.