Long-Pulse N2-Laser Pumped by a Longitudinal Discharge

2020 ◽  
Vol 62 (9) ◽  
pp. 1695-1699
Author(s):  
I. N. Konovalov ◽  
Yu. N. Panchenko ◽  
A. V. Puchikin ◽  
V. F. Losev ◽  
S. M. Bobrovnikov
Keyword(s):  
Longitudinal Discharge ◽  
Long Pulse

scholarly journals Long pulse N2 laser pumped by longitudinal discharge

2019 ◽  
pp. 139-143
Author(s):  
I.N. Konovalov ◽  
◽  
Y.N. Panchenko ◽  
A.V. Puchikin ◽  
V.F. Losev ◽  
...  
Keyword(s):  
Longitudinal Discharge ◽  
Long Pulse

Thermal scribing processes with long-pulse and Q-switch fiberlasers

2014 ◽  
Author(s):  
Christoph Ruettimann ◽  
Ulrich Duerr ◽  
Raymond von Niederhaeusern ◽  
Matthias Julius
Keyword(s):  
Long Pulse

Long Pulse Homopolar Generator

1988 ◽  
Author(s):  
Edward A. Knoth ◽  
David P. Bauer
Keyword(s):  
Long Pulse

Optical properties of benzene and derivatives by the single beam thermal lens technique

2017 ◽  
Vol 26 (02) ◽  
pp. 1750025 ◽  
Author(s):  
M. K. Biswas ◽  
P. K. Das ◽  
E. Hoque ◽  
S. M. Sharafuddin ◽  
S. K. Das ◽  
...  
Keyword(s):  
Thermal Lens ◽  
Continuous Wave ◽  
Refractive Index Change ◽  
Optical Nonlinearity ◽  
Index Change ◽  
Single Beam ◽  
Cw Laser ◽  
Ion Laser ◽  
Benzene Toluene ◽  
Long Pulse

The present work studies the optical nonlinearity exhibited by the material (for Continuous Wave (CW) laser or long pulse) due to the change in thermal properties of the material on illumination. Thermal lens (TL) technique has been used to measure the refractive index change due to the formation of TL along with other thermo-optic properties of the material in solution. A CW Ar-ion laser has been used as light source and the laser beam was chopped at 25[Formula: see text]Hz frequency to obtain 12[Formula: see text]ms pulse to observe the formation of the TL within the sample. The [Formula: see text] value have been calculated by the TL technique for Benzene, Toluene and Dimethylaniline (DMA) in toluene and Benzene. The [Formula: see text] value is found to be in the order of 10[Formula: see text] to 10[Formula: see text][Formula: see text]cm2[Formula: see text]W[Formula: see text].

scholarly journals Experimental Study of Plasma Plume Analysis of Long Pulse Laser Irradiates CFRP and GFRP Composite Materials

Crystals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 545
Author(s):  
Yao Ma ◽  
Chao Xin ◽  
Wei Zhang ◽  
Guangyong Jin
Keyword(s):  
Composite Materials ◽  
Laser Processing ◽  
Plasma Plume ◽  
Material Surface ◽  
Laser Fabrication ◽  
Breakdown Time ◽  
Reinforced Polymer ◽  
Gfrp Composite ◽  
Damage Process ◽  
Long Pulse

The application of laser fabrication of fiber-reinforced polymer (FRP) has an irreplaceable advantage. However, the effect of the plasma generated in laser fabrication on the damage process is rarely mentioned. In order to further study the law and mechanism of laser processing, the laser process was measured. CFRP and GFRP materials were damaged by a 1064 nm millisecond pulsed laser. Moreover, the propagation velocity and breakdown time of plasma plume were compared. The results show that GFRP is more vulnerable to breakdown than CFRP under the same conditions. In addition, the variation of plasma plume and material surface temperature with the number of pulses was also studied. The results show that the variation trend is correlated, that is, the singularities occur at the second pulse. Based on the analysis of experimental phenomena, this paper provides guidance for plasma phenomena in laser processing of composite materials.

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