scholarly journals Effect of Target properties on the Plasma Characteristics that produced by Laser at Atmospheric Pressure

2019 ◽  
pp. 1251-1258
Author(s):  
Qusay Adnan Abbas
Keyword(s):  
Pulse Laser ◽  
Atmospheric Pressure ◽  
Ionization Energy ◽  
Laser Energy ◽  
Wave Length ◽  
Optical Emission ◽  
Fundamental Wave ◽  
Pulse Laser Energy ◽  
Plasma Characteristics ◽  
Ionic Emission

In this paper, Al and Cu Plasmas that produced by pulsed Nd:YAG laser with fundamental wave length with a pulse duration of 6 nS focused onto Al and Cu targets in atmospheric air are investigated spectroscopically. The influence of pulse laser energy on the some Al and Cu plasmas characteristics was diagnosed by using optical emission spectroscopy for the wavelength range 320-740 nm. The results observed that the increase of pulse laser energy causes to increase all plasma characteristics of both plasmas under study and shown increasing of the emission line intensity. The appearance of the atomic and ionic emission lines of an element in the emission spectrum depends on the ionization energy of target atoms. The plasma characteristics are subjected to the ionization energy of the target element and laser energy.

scholarly journals Influence of Gas Type on the Laser Produced Graphite Plasma

2021 ◽  
Vol 2114 (1) ◽  
pp. 012030
Author(s):  
H Adil A Alazawi ◽  
Q Adnan Abass
Keyword(s):  
Electron Temperature ◽  
Electron Density ◽  
Plasma Frequency ◽  
Laser Energy ◽  
Debye Length ◽  
Optical Emission ◽  
Plasma Parameters ◽  
Pulse Laser Energy ◽  
Electron Density Increase ◽  
Ionic Emission

Abstract Plasma graphite creation by a pulsed Nd: YAG laser with a wavelength of 1064nm to a target in vacuum in two cases (Argon, Air) with varied gas pressures and the resulting spectrum was diagnosed using optical emission spectroscopy for the wavelength range 320-740nm electron temperature Te and electron density ne Debye lengthλD , and plasma frequency f p were calculated. The results showed that increasing the pulse laser energy causes all plasma parameters of both gases under study to increase, as well as a rise in the emission line intensity. The ionization energy of target atoms determines the presence of an element’s atomic and ionic emission lines in the emission spectrum, increase in pressure decreases the electron temperature, and Debye length, also plasma frequency and electron density increase, as it has been proven that the type of gas does not affect the properties of plasma.

Temperature characteristics of absorber for large-energy long pulse laser energy meter

2018 ◽  
Vol 47 (4) ◽  
pp. 406004 ◽  
Author(s):  
李 南 Li Nan ◽  
乔春红 Qiao Chunhong ◽  
范承玉 Fan Chengyu ◽  
杨高潮 Yang Gaochao
Keyword(s):  
Pulse Laser ◽  
Laser Energy ◽  
Large Energy ◽  
Temperature Characteristics ◽  
Energy Meter ◽  
Pulse Laser Energy ◽  
Long Pulse

The Fabrication of La0.9Sr0.1CoO3 Thin Films and its LITV Effect Applications

2012 ◽  
Vol 538-541 ◽  
pp. 3-6
Author(s):  
Xiao Fei Wei ◽  
Li Sheng Zhang ◽  
Pei Jie Wang ◽  
Yan Fang
Keyword(s):  
Thin Films ◽  
Pulse Laser ◽  
Laser Energy ◽  
Fast Response ◽  
Laser Deposition ◽  
Full Width ◽  
High Quality ◽  
Power Meter ◽  
Thermoelectric Voltage ◽  
Pulse Laser Energy

High quality La0.9Sr0.1CoO3 (LSCO) thin films grown on 5° vicinal cut LaAlO3 (LAO) (100) substrates were deposited by pulse laser deposition (PLD). Laser induced thermoelectric voltage (LITV) was detected instantly with fast response time and extremely narrow full width at half maximum (FWHM) when 248 nm pulse laser radiated on the surface of LSCO thin films. These merits of LSCO thin films make it one ideal material to fabricate light detectors and photosensitive device. With the increase of pulse laser energy, the peak voltages increase linearly, so LSCO thin films can be used to make high precision laser energy/power meter.

Simulation study of short-pulse laser energy conversion to x-ray line emission

2001 ◽  
Author(s):  
Jiri Limpouch ◽  
A. B. Iskakov ◽  
Aleksandr A. Andreev ◽  
Hidetoshi Nakano
Keyword(s):  
Energy Conversion ◽  
Pulse Laser ◽  
Simulation Study ◽  
Laser Energy ◽  
Short Pulse ◽  
Line Emission ◽  
X Ray ◽  
Short Pulse Laser ◽  
Pulse Laser Energy

A new pulse laser energy meter

1990 ◽  
Vol 61 (6) ◽  
pp. 1743-1746 ◽  
Author(s):  
Yipeng Yuan
Keyword(s):  
Pulse Laser ◽  
Laser Energy ◽  
Energy Meter ◽  
Pulse Laser Energy
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