Laser-induced periodic surface structures on fused silica upon cross-polarized two-color double-fs-pulse irradiation

2015 ◽  
Vol 336 ◽  
pp. 39-42 ◽  
Author(s):  
S. Höhm ◽  
M. Herzlieb ◽  
A. Rosenfeld ◽  
J. Krüger ◽  
J. Bonse
2013 ◽  
Vol 103 (25) ◽  
pp. 254101 ◽  
Author(s):  
S. Höhm ◽  
M. Herzlieb ◽  
A. Rosenfeld ◽  
J. Krüger ◽  
J. Bonse

2013 ◽  
Vol 102 (5) ◽  
pp. 054102 ◽  
Author(s):  
S. Höhm ◽  
A. Rosenfeld ◽  
J. Krüger ◽  
J. Bonse

2016 ◽  
Vol 108 (18) ◽  
pp. 181607 ◽  
Author(s):  
Simon Schwarz ◽  
Stefan Rung ◽  
Ralf Hellmann

Materials ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1340 ◽  
Author(s):  
Stephan Gräf ◽  
Clemens Kunz ◽  
Sebastian Engel ◽  
Thibault Derrien ◽  
Frank Müller

The formation and properties of laser-induced periodic surface structures (LIPSS) were investigated upon fs-laser irradiation of fused silica at different initial substrate temperatures, TS. For substrate heating between room temperature, TRT, and TS = 1200 °C, a continuous wave CO2 laser was used as the radiation source. The surface structures generated in the air environment at normal incidence with five successive fs-laser pulses (pulse duration, τ = 300 fs, laser wavelength, λ = 1025 nm, repetition frequency, frep = 1 kHz) were characterized by using optical microscopy, scanning electron microscopy, and 2D-Fourier transform analysis. The threshold fluence of fused silica was systematically investigated as a function of TS. It was shown that the threshold fluence for the formation of low-spatial frequency LIPSS (LSFL) decreases with increasing TS. The results reveal that the initial spatial period observed at TRT is notably increased by increasing TS, finally leading to the formation of supra-wavelength LIPSS. The findings are discussed in the framework of the electromagnetic interference theory, supplemented with an analysis based on thermo-convective instability occurring in the laser-induced molten layer. Our findings provide qualitative insights into the formation mechanisms of LIPSS, which allow improvements of the control of nanostructure formation to be made for corresponding applications of dielectric materials in the future.


2015 ◽  
Vol 23 (20) ◽  
pp. 25959 ◽  
Author(s):  
Sandra Höhm ◽  
Arkadi Rosenfeld ◽  
Jörg Krüger ◽  
Jörn Bonse

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