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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Journal ArticleDOI
Analysis of nascent silicon phase-change gratings induced by femtosecond laser irradiation in vacuum.
Felice Gesuele,Jijil Jj Nivas,Rosalba Fittipaldi,Carlo Altucci,Riccardo Bruzzese,Pasqualino Maddalena,Salvatore Amoruso +6 more
TL;DR: Comparative analysis with the surface formed in air, in the same experimental conditions, evidences the important role played by nanoparticles densely decorating the target in air and the striking variation occurring in vacuum.
Journal ArticleDOI
Efficient Surface Enhanced Raman Scattering substrates from femtosecond laser based fabrication
TL;DR: In this paper, a femtosecond laser based methodology for efficient surface enhanced Raman scattering (SERS) substrate fabrication has been proposed Both nano scaffold silicon (black silicon) and gold nanoparticles (Au-NP) are fabricated by a femto-cond laser-based technique for mass production.
Journal ArticleDOI
Femtosecond laser-induced periodic surface structures on lithium niobate crystal benefiting from sample heating
TL;DR: In this article, periodic surface structures were fabricated by irradiating lithium niobate (LN) crystals with femtosecond laser pulses at sample temperatures ranging from 28°C to 800°C.
Journal ArticleDOI
Broadband and wide-angle antireflective subwavelength microstructures on zinc sulfide fabricated by femtosecond laser parallel multi-beam.
TL;DR: The broadband and wide-angle antireflective SWMS on ZnS as well as robust mechanical strength and hydrophobicity have been achieved, expecting to be of great potential in an optoelectronic device application.
Journal ArticleDOI
Surface nanopatterning of Al/Ti multilayer thin films and Al single layer by a low-fluence UV femtosecond laser beam
Aleksander G. Kovačević,Suzana Petrović,Bojana Bokic,Biljana M. Gaković,Miloš Bokorov,Borislav Vasić,Radoš Gajić,Milan S. Trtica,Branislav M. Jelenkovic +8 more
TL;DR: In this article, the effects of femtosecond laser beam with 76MHz repetition rate on two types of thin films on Si substrate, and the multilayered thin film consisted of five Al/Ti bilayers (total thickness 130nm) 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.
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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.