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
Time-dependent wettability of nano-patterned surfaces fabricated by femtosecond laser with high efficiency
Yingchuan Zhang,Guisheng Zou,Lei Liu,Yue Zhao,Qiong Liang,Aiping Wu,Y. Norman Zhou,Y. Norman Zhou +7 more
TL;DR: In this article, a cylindrical lens was used to line focus a low repetition femtosecond laser using a 3D laser for fabrication of nanoscale surface structure.
Journal ArticleDOI
Ripple formation on silver after irradiation with radially polarised ultrashort-pulsed lasers
TL;DR: In this article, a combined hydrodynamical and thermo-elastic model is presented to account for the influence of temperature-related lattice movements in laser beam conditions that are sufficient to produce material melting.
Journal ArticleDOI
Femtosecond Laser-Induced, Nanoparticle-Embedded Periodic Surface Structures on Crystalline Silicon for Reproducible and Multi-utility SERS Platforms.
Syed Hamad,Sree Satya Bharati Moram,Balaji Yendeti,G. Krishna Podagatlapalli,S. V. S. Nageswara Rao,Anand P. Pathak,Mahamad Ahamad Mohiddon,Venugopal Rao Soma +7 more
TL;DR: A procedure for preparing reproducible SERS-active substrates comprised of laser-induced nanoparticle-embedded periodic surface structures (LINEPSS) and metallization of silicon (Si) LINEPSS is established and these platforms are demonstrated to be capable, even for multiple usages.
Journal ArticleDOI
Formation mechanisms of sub-wavelength ripples during femtosecond laser pulse train processing of dielectrics
TL;DR: In this paper, a new model is proposed to investigate femtosecond laser pulse train processing of dielectrics by including the laser wave properties in the photon particle properties based plasma model.
Journal ArticleDOI
Femtosecond laser-induced periodic surface structures on titanium nitride coatings for tribological applications
TL;DR: In this paper, the authors used femtosecond laser pulses (30fs, 790nm, 1 kHz pulse repetition rate) to generate large surface areas (5mm × 5mm) of laser-induced periodic surface structures (LIPSS) with sub-wavelength periods ranging between 470nm and 600nm.
References
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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.