Precursor Ionization and Propagation Velocity of a Laser-Absorption Wave in 1.053 and 10.6- $\mu{\rm m}$ Wavelengths Laser Radiation

2014 ◽  
Vol 42 (10) ◽  
pp. 3121-3128 ◽  
Author(s):  
Kohei Shimamura ◽  
Kimiya Komurasaki ◽  
Joseph A. Ofosu ◽  
Hiroyuki Koizumi
Keyword(s):  
Laser Radiation ◽  
Propagation Velocity ◽  
Laser Absorption ◽  
Absorption Wave

Effect of laser ablation plasma on dynamics of a laser absorption wave in a gas

1997 ◽  
Author(s):  
Vladimir N. Anisimov ◽  
Valeria G. Grishina ◽  
Oleg N. Derkach ◽  
Dmitry D. Malyta ◽  
Andrey Y. Sebrant
Keyword(s):  
Laser Ablation ◽  
Laser Absorption ◽  
Ablation Plasma ◽  
Laser Ablation Plasma ◽  
Absorption Wave

scholarly journals Shock pressure induced by 0.44 μm laser radiation on aluminum targets

2003 ◽  
Vol 21 (4) ◽  
pp. 481-487 ◽  
Author(s):  
D. BATANI ◽  
H. STABILE ◽  
A. RAVASIO ◽  
T. DESAI ◽  
G. LUCCHINI ◽  
...  
Keyword(s):  
Laser Radiation ◽  
Laser Intensity ◽  
Streak Camera ◽  
Present Report ◽  
Target Thickness ◽  
Shock Velocity ◽  
Shock Pressure ◽  
Phase Zone ◽  
Laser Absorption ◽  
Good Agreement

Shock pressure generated in aluminum targets due to the interaction of 0.44 μm (3 ω of iodine laser) laser radiation has been studied. The laser intensity profile was smoothed using phase zone plates. Aluminum step targets were irradiated at an intensity I ≈ 1014 W/cm2. Shock velocity in the aluminum target was estimated by detecting the shock luminosity from the target rear using a streak camera to infer the shock pressure. Experimental results show a good agreement with the theoretical model based on the delocalized laser absorption approximation. In the present report, we explicitly discuss the importance of target thickness on the shock pressure scaling.

Mode conversion of laser radiation in the presense of a magnetic wiggler

1995 ◽  
Vol 53 (3) ◽  
pp. 285-292 ◽  
Author(s):  
Jetendra Parashar ◽  
H. D. Pandey ◽  
R. K. Singh
Keyword(s):  
Laser Radiation ◽  
Mode Conversion ◽  
Langmuir Wave ◽  
Total Reflection ◽  
Critical Layer ◽  
Landau Damping ◽  
Laser Absorption ◽  
Wiggler Magnetic Field ◽  
Image Position ◽  
Uniform Plasma

Laser radiation propagating through a non-uniform plasma along the direction of the density gradient suffers total reflection at the critical layer. However, when a wiggler magnetic field exists near the critical layer, the laser drives a Langmuir wave. For suitable values of Bw and kw, the power transfer from the laser to the Langmuir wave could be as high as 60%. The Langmuir wave deposits its energy on the electrons via Landau damping. This may be an efficient mechanism of laser absorption when large self-generated magnetic fields exist in the plasma.

Laser Absorption Wave Formation

AIAA Journal ◽  
1975 ◽  
Vol 13 (10) ◽  
pp. 1279-1286 ◽  
Author(s):  
P. D. Thomas
Keyword(s):  
Wave Formation ◽  
Laser Absorption ◽  
Absorption Wave
Sign in / Sign up

Export Citation Format

Share Document