Enhancement of optical emission and ion currents in a laser produced silicon plasma by femtosecond laser-induced periodic surface structuring

2018 ◽  
Vol 25 (6) ◽  
pp. 063304 ◽  
Author(s):  
K. K. Anoop ◽  
Nancy Verma ◽  
Nithin Joy ◽  
S. S. Harilal ◽  
Reji Philip
Keyword(s):  
Femtosecond Laser ◽  
Optical Emission ◽  
Ion Currents ◽  
Periodic Surface ◽  
Surface Structuring

Ultrafast Dynamics of Sub-Wavelength Periodic Surface Structuring during Femtosecond Laser Processing of Dielectrics

2014 ◽  
Vol 1035 ◽  
pp. 426-431
Author(s):  
Yan Ping Yuan ◽  
Ji Min Chen ◽  
Fu Rong Liu
Keyword(s):  
Femtosecond Laser ◽  
Laser Fluence ◽  
Chemical Characteristic ◽  
Quantum Model ◽  
Electron Dynamics ◽  
Periodic Surface ◽  
Ablation Crater ◽  
Surface Structuring ◽  
Femtosecond Laser Processing ◽  
Sub Wavelength

A femtosecond laser pulse duration is shorter than many physical/chemical characteristic times, which makes it possible to control electron dynamics such as ionizations and electron densities. This study expermetally investigtes the effects of laser fluence on sub-wavelength periodic surface structuring based on ultrafast laser electron dynamics control. A quantum model for the sub-wavelength periodic surface structuring is also proposed, which considers both the wave properties in the photon particle-properties based plasma model for photon-electron interactions and transient localized changes of material properties. It shows that the laser fluence strongly affects the ablation crater shapes. The prediction of ablation crater shape and periodicity is in agreement with experimental data.

scholarly journals Enhancement of surface area and wettability properties of boron doped diamond by femtosecond laser-induced periodic surface structuring

2017 ◽  
Vol 7 (9) ◽  
pp. 3389 ◽  
Author(s):  
Eduardo Granados ◽  
Miguel Martinez Calderon ◽  
Jacek Krzywinski ◽  
Eckhard Wörner ◽  
Ainara Rodriguez ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Surface Area ◽  
Boron Doped Diamond ◽  
Periodic Surface ◽  
Boron Doped ◽  
Surface Structuring

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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