Pump-probe imaging of laser-induced periodic surface structures after ultrafast irradiation of Si

2013 ◽  
Vol 103 (14) ◽  
pp. 141104 ◽  
Author(s):  
Ryan D. Murphy ◽  
Ben Torralva ◽  
David P. Adams ◽  
Steven M. Yalisove
Keyword(s):  
Surface Structures ◽  
Pump Probe ◽  
Periodic Surface

scholarly journals Feedback-Driven Plasmonic-Thermal Route to Femtosecond-Laser-Induced Periodic Surface Structures in Silicon Indicated by Pump-Probe Scattering and Diffraction

Surfaces ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 277-294
Author(s):  
Robin Wehner ◽  
Ruediger Grunwald
Keyword(s):  
Surface Structures ◽  
Pump Probe ◽  
Periodic Surface ◽  
Fundamental Interest ◽  
Self Organized ◽  
Spatial Frequencies ◽  
Linearly Polarized ◽  
General Aspects ◽  
Excitation Conditions

The self-organized formation of nanoscale laser-induced periodic surface structures (LIPSS) is still not fully understood with respect to the dynamics and interplay of contributing complex mechanisms. The transition from randomness to order and the specific role of nano-feedback are of fundamental interest because of their general aspects. In our study, the very first steps of the surface reconfiguration are demonstrated by analyzing the topology of evolving nano-crater maps. The evolution of spatial frequencies and directional arrangement indicate a feedback-driven adaptation of k-vectors to the required excitation conditions of elementary dipoles in the linearly polarized laser field. The time-dependent structure formation was studied by pump-probe diffraction and scattering experiments. The ratio of the contributions of characteristic light patterns enables plasmonic and non-plasmonic mechanisms to be distinguished, which subsequently act at distinctly different time scales. Recently developed multistage models for the dynamics of material modification are confirmed. The influence of accumulation effects is clearly demonstrated by characteristic changes in scattering and diffraction with an increasing number of preceding pulses. It is assumed that the thermal and plasmonic contributions to accumulation are coupled and thus generate spatially variable modifications.

Formation of laser-induced periodic surface structures on different materials: fundamentals, properties and applications

2020 ◽  
Vol 9 (1-2) ◽  
pp. 11-39 ◽  
Author(s):  
Stephan Gräf
Keyword(s):  
Friction And Wear ◽  
Review Paper ◽  
Laser Wavelength ◽  
Single Step ◽  
Surface Structures ◽  
Direct Writing ◽  
Periodic Surface ◽  
Experimental Approaches ◽  
Ordered Nanostructures ◽  
Physical Background

AbstractThe use of ultra-short pulsed lasers enables the fabrication of laser-induced periodic surface structures (LIPSS) on various materials following a single-step, direct-writing technique. These specific, well-ordered nanostructures with periodicities in the order of the utilised laser wavelength facilitate the engineering of surfaces with functional properties. This review paper discusses the physical background of LIPSS formation on substrates with different material properties. Using the examples of structural colours, specific wetting states and the reduction of friction and wear, this work presents experimental approaches that allow to deliberately influence the LIPSS formation process and thus tailor the surface properties. Finally, the review concludes with some future developments and perspectives related to forthcoming applications of LIPSS-based surfaces are discussed.

scholarly journals Generation of Multiple Vector Optical Bottle Beams

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 218
Author(s):  
Svetlana N. Khonina ◽  
Alexey P. Porfirev ◽  
Sergey G. Volotovskiy ◽  
Andrey V. Ustinov ◽  
Sergey A. Fomchenkov ◽  
...  
Keyword(s):  
Intensity Distribution ◽  
Polarization State ◽  
Spatial Dynamics ◽  
Surface Structures ◽  
Optical Traps ◽  
Spatial Transformation ◽  
Optical Elements ◽  
Periodic Surface ◽  
Matter Interaction ◽  
Different Types

We propose binary diffractive optical elements, combining several axicons of different types (axis-symmetrical and spiral), for the generation of a 3D intensity distribution in the form of multiple vector optical ‘bottle’ beams, which can be tailored by a change in the polarization state of the illumination radiation. The spatial dynamics of the obtained intensity distribution with different polarization states (circular and cylindrical of various orders) were investigated in paraxial mode numerically and experimentally. The designed binary axicons were manufactured using the e-beam lithography technique. The proposed combinations of optical elements can be used for the generation of vector optical traps in the field of laser trapping and manipulation, as well as for performing the spatial transformation of the polarization state of laser radiation, which is crucial in the field of laser-matter interaction for the generation of special morphologies of laser-induced periodic surface structures.

Laser-Induced Periodic Surface Structures Nanofabricated on Poly(trimethylene terephthalate) Spin-Coated Films

Langmuir ◽  
2012 ◽  
Vol 28 (20) ◽  
pp. 7938-7945 ◽  
Author(s):  
I. Martín-Fabiani ◽  
E. Rebollar ◽  
S. Pérez ◽  
D. R. Rueda ◽  
M. C. García-Gutiérrez ◽  
...  
Keyword(s):  
Surface Structures ◽  
Periodic Surface ◽  
Trimethylene Terephthalate

scholarly journals High-speed manufacturing of highly regular femtosecond laser-induced periodic surface structures: physical origin of regularity

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Iaroslav Gnilitskyi ◽  
Thibault J.-Y. Derrien ◽  
Yoann Levy ◽  
Nadezhda M. Bulgakova ◽  
Tomáš Mocek ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
High Speed ◽  
Surface Structures ◽  
Physical Origin ◽  
Periodic Surface
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