Temporal evolution of femtosecond laser induced plasma filament in air and N2

2013 ◽  
Vol 103 (24) ◽  
pp. 244102 ◽  
Author(s):  
J. Papeer ◽  
D. Gordon ◽  
P. Sprangle ◽  
M. Botton ◽  
A. Zigler
Keyword(s):  
Femtosecond Laser ◽  
Temporal Evolution ◽  
Laser Induced Plasma ◽  
Plasma Filament

Temporal evolution of femtosecond laser induced plasma filament

2014 ◽  
Author(s):  
Evgeny (Jenya) Papeer ◽  
Daniel Gordon ◽  
Phillip Sprangle ◽  
Moti Botton-Dascal ◽  
Arie Zigler
Keyword(s):  
Femtosecond Laser ◽  
Temporal Evolution ◽  
Laser Induced Plasma ◽  
Plasma Filament

Experimental study of the effects of femtosecond laser power on the induced-plasma geometry, supercontinuum white light generation and conical emission in air

2020 ◽  
Vol 34 (14) ◽  
pp. 2050152
Author(s):  
A. I. Sanny ◽  
W. M. Edmund Loh
Keyword(s):  
Femtosecond Laser ◽  
White Light ◽  
Laser Power ◽  
Forward Direction ◽  
Geometrical Shape ◽  
Laser Induced Plasma ◽  
Plasma Filament ◽  
White Light Generation ◽  
Conical Emission ◽  
Light Generation

This paper presents the experimental investigation of the changes in the geometrical shape of femtosecond laser-induced plasma in air under different laser power, and its effects on supercontinuum white light generation and conical emission. When a femtosecond laser is focused into a tiny spot in air, optical breakdown of air molecules occurs and this leads to the generation of plasma filament whose geometrical size and shape depend on laser power. This process is then followed by two light-emitting processes, namely supercontinuum white light generation and conical emission, both of which scatter light that reveals the characteristics of the plasma filament. Our experiment shows that the laser-induced plasma becomes thinner and longer at high average laser power but appears thick and round at lower laser power. At higher laser power, conical emission which scatters laser light in the forward direction dominates the scattering process while at lower laser power, it is the scattering of supercontinuum white light in all directions that plays a bigger role. The intricate rainbow-like pattern formed on a white screen located far away in the forward direction reveals sophisticated nonlinear optical processes that take place in conical emission which slowly diminishes as the laser power is gradually reduced.

A comparison of nanosecond and femtosecond laser-induced plasma spectroscopy of brass samples

2000 ◽  
Vol 55 (11) ◽  
pp. 1771-1785 ◽  
Author(s):  
V Margetic ◽  
A Pakulev ◽  
A Stockhaus ◽  
M Bolshov ◽  
K Niemax ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Plasma Spectroscopy ◽  
Laser Induced Plasma

Femtosecond-laser-induced plasma spectroscopy for high-pressure gas sensing: Enhanced stability of spectroscopic signal

2018 ◽  
Vol 113 (21) ◽  
pp. 214103 ◽  
Author(s):  
Paul S. Hsu ◽  
Anil K. Patnaik ◽  
Adam J. Stolt ◽  
Jordi Estevadeordal ◽  
Sukesh Roy ◽  
...  
Keyword(s):  
High Pressure ◽  
Femtosecond Laser ◽  
Gas Sensing ◽  
Plasma Spectroscopy ◽  
Laser Induced Plasma ◽  
Enhanced Stability

Single-Shot Ptychographic Imaging of Femtosecond Laser Induced Plasma Dynamics

2020 ◽  
Author(s):  
Jonathan Barolak ◽  
David Goldberger ◽  
Charles Durfee ◽  
Daniel Adams
Keyword(s):  
Femtosecond Laser ◽  
Single Shot ◽  
Plasma Dynamics ◽  
Laser Induced Plasma

Image Enhancement and Luminance Analysis of Femtosecond Laser Induced Plasma Spot

2019 ◽  
Vol 46 (2) ◽  
pp. 0202001
Author(s):  
王福斌 Wang Fubin ◽  
刘洋 Liu Yang ◽  
潘兴辰 Pan Xingchen ◽  
王宜文 Wang Yiwen
Keyword(s):  
Femtosecond Laser ◽  
Image Enhancement ◽  
Laser Induced Plasma

Spatiotemporal diagnostics of laser induced plasma of potassium gallosilicate zeolite

2019 ◽  
Vol 34 (6) ◽  
pp. 1247-1255 ◽  
Author(s):  
J. J. Camacho ◽  
J. Vrabel ◽  
S. Manzoor ◽  
L. V. Pérez-Arribas ◽  
D. Díaz ◽  
...  
Keyword(s):  
Temporal Evolution ◽  
Zeolite Sample ◽  
Laser Induced Plasma ◽  
Zeolite P

The present work focuses on the analysis of laser induced plasma of a zeolite sample to study its spatial and temporal evolution.

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