Characterization of laser produced plasma using laser induced breakdown spectroscopy

The plasma parameter studies of the Nd:YAG (neodymium-doped yttrium aluminum garnet, Nd:Y 3 Al 15 O 12 ) crystal by using the fundamental (1064 nm) and second (532 nm) harmonics of Nd:YAG laser are reported. The electron temperature ( T e ) and electron number density ( N e ) were determined using t...

Full description

Saved in:
Bibliographic Details
Published in:Plasma physics reports 2017-08, Vol.43 (8), p.858-864
Main Authors: Ahmat, L., Shahzada, Shaista, Haq, S. U., Shah, M., Nadeem, Ali
Format: Article
Language:English
Subjects:
Absorptivity
ALUMINIUM
Aluminum
Atomic
BREMSSTRAHLUNG
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
DOPED MATERIALS
Electron energy
ELECTRON TEMPERATURE
Electrons
GARNETS
Irradiance
Laser induced breakdown spectroscopy
Laser modes
Laser Plasma
LASER SPECTROSCOPY
LASER-PRODUCED PLASMA
Lasers
Mathematical analysis
Molecular
NEODYMIUM
NEODYMIUM LASERS
Optical and Plasma Physics
Physics
Physics and Astronomy
Plasma
Plasmas (physics)
RADIANT FLUX DENSITY
Semiconductor lasers
YAG lasers
YTTRIUM
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The plasma parameter studies of the Nd:YAG (neodymium-doped yttrium aluminum garnet, Nd:Y 3 Al 15 O 12 ) crystal by using the fundamental (1064 nm) and second (532 nm) harmonics of Nd:YAG laser are reported. The electron temperature ( T e ) and electron number density ( N e ) were determined using the Boltzmann plot method and the Stark-broadened line profile, respectively. An increase in the plasma parameters have been observed with an increase in the laser irradiance for both laser modes. The electron temperatures were calculated in the range of 0.53–0.66 eV for 1064 nm and 0.47–0.60 eV for 532 nm, and the electron number densities were determined in the range of 7.43 × 10 15 –3.27 × 10 16 cm −3 for 1064 nm and 1.35 × 10 16 –3.97 × 10 16 cm −3 for 532 nm in the studied irradiance range of 1.19–12.5 GW/cm 2 . However, the spatial evolution of the plasma parameters investigated up to 2.75 mm away from the target surface at a fixed laser irradiance of 6.51 GW/cm2 showed a decreasing trend. In addition, the estimated values of the inverse bremsstrahlung (IB) absorption coefficients at both laser wavelengths showed that the IB process is dominant for the 1064-nm laser.
ISSN:1063-780X
1562-6938
DOI:10.1134/S1063780X17080013