The role of asymmetric excitation in self-organized nanostructure formation upon femtosecond laser ablation

2012 ◽  
Author(s):  
Juergen Reif ◽  
Olga Varlamova ◽  
Sergej Varlamov ◽  
Michael Bestehorn
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Nanostructure Formation ◽  
Self Organized

The role of asymmetric excitation in self-organized nanostructure formation upon femtosecond laser ablation

2011 ◽  
Vol 104 (3) ◽  
pp. 969-973 ◽  
Author(s):  
Juergen Reif ◽  
Olga Varlamova ◽  
Sergej Varlamov ◽  
Michael Bestehorn
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Nanostructure Formation ◽  
Self Organized

On the physics of self-organized nanostructure formation upon femtosecond laser ablation

2014 ◽  
Vol 117 (1) ◽  
pp. 179-184 ◽  
Author(s):  
Juergen Reif ◽  
Olga Varlamova ◽  
Sebastian Uhlig ◽  
Sergej Varlamov ◽  
Michael Bestehorn
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Nanostructure Formation ◽  
Self Organized

Formation of self-organized regular nanostructures upon femtosecond laser ablation

2004 ◽  
Author(s):  
Juergen Reif ◽  
Florenta A. Costache ◽  
Sebastian Eckert ◽  
Simona Kouteva-Arguirova ◽  
Michael Bestehorn ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Self Organized

Feedback Effect on the Self-Organized Nanostructures Formation on Silicon upon Femtosecond Laser Ablation

2009 ◽  
Vol 156-158 ◽  
pp. 535-540
Author(s):  
Olga Varlamova ◽  
Markus Ratzke ◽  
Jürgen Reif
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Feedback Effect ◽  
Constant Intensity ◽  
Pulse Separation ◽  
Self Organized ◽  
Dose Number ◽  
Modified Surface ◽  
Accumulated Dose

The role of multi-pulse feedback in self-organized nanostructure (ripples) formation on silicon surface upon femtosecond laser ablation is investigated. For irradiation at constant intensity and pulse repetition rate, the previously postulated feedback effect of accumulated dose with in¬creasing number of pulses is confirmed and investigated in detail: both the modified surface area as well as the complexity and feature size of generated nanostructures increase with accumulated dose. More interestingly, at constant total incident dose (number of pulses times pulse energy) accumu¬lation and feedback depend strongly on temporal pulse separation. The feedback becomes increas¬ingly weaker with increasing time intervals between successive pulses, involving times up to one second and more before individual pulses act independently. In a first attempt to model this long-lived coupling, we find that conduction band electrons, produced by the preceding laser pulse, can provide, indeed, such feedback by facilitating coupling of subsequent pulses for substantial delays. However, the achieved time span of about a millisecond is still significantly shorter than observed experimentally.

Modeling of residual thermal effect in femtosecond laser ablation of metals: role of a gas environment

2008 ◽  
Vol 92 (4) ◽  
pp. 883-889 ◽  
Author(s):  
N. M. Bulgakova ◽  
V. P. Zhukov ◽  
A. Y. Vorobyev ◽  
Chunlei Guo
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Thermal Effect ◽  
Femtosecond Laser Ablation ◽  
Gas Environment

Multipulse feedback in self-organized ripples formation upon femtosecond laser ablation from silicon

2010 ◽  
Vol 101 (2) ◽  
pp. 361-365 ◽  
Author(s):  
Juergen Reif ◽  
Olga Varlamova ◽  
Markus Ratzke ◽  
Martin Schade ◽  
Hartmut S. Leipner ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Self Organized

Long-Time Feedback in the Formation of Self-Organized Nanostructures upon Multipulse Femtosecond Laser Ablation

2010 ◽  
Author(s):  
Juergen Reif ◽  
Olga Varlamova ◽  
Mourad Bounhalli ◽  
Tzanimir Arguirov ◽  
Claude Phipps
Keyword(s):  
Laser Ablation ◽  
Femtosecond Laser ◽  
Femtosecond Laser Ablation ◽  
Self Organized ◽  
Long Time
Sign in / Sign up

Export Citation Format

Share Document