scholarly journals CO2 laser annealing of Ge core optical fibers with different laser power

2019 ◽  
Vol 9 (3) ◽  
pp. 1333 ◽  
Author(s):  
Ziwen Zhao ◽  
Yujizhe Mao ◽  
Li Ren ◽  
Jianbo Zhang ◽  
Na Chen ◽  
...  
Keyword(s):  
Optical Fibers ◽  
Co2 Laser ◽  
Laser Power ◽  
Laser Annealing

Detection of CO2-laser power variations via plasma tube impedance changes

1980 ◽  
Vol 21 (4) ◽  
pp. 407-409 ◽  
Author(s):  
A. L. Scholtz ◽  
G. Schiffner
Keyword(s):  
Co2 Laser ◽  
Laser Power ◽  
Plasma Tube

CO2 laser annealing of Ge core fibers with different core diameters

2021 ◽  
Vol 66 ◽  
pp. 102645
Author(s):  
Ziwen Zhao ◽  
Jianbo Zhang ◽  
Shaoye Wang ◽  
Yifan Du ◽  
Li Ren
Keyword(s):  
Co2 Laser ◽  
Laser Annealing

EXPERIMENTAL STUDY ON THE CO2 LASER CUTTING OF NOVEL POLYAMIDE 6/FLUOROELASTOMER THERMOPLASTIC ELASTOMERIC BLENDS

2015 ◽  
Vol 88 (1) ◽  
pp. 125-137 ◽  
Author(s):  
Shib Shankar Banerjee ◽  
Anil K. Bhowmick
Keyword(s):  
Low Power ◽  
Co2 Laser ◽  
Process Parameters ◽  
Laser Power ◽  
Laser Cutting ◽  
Manufacturing Industry ◽  
Cutting Speed ◽  
Polyamide 6 ◽  
Thermoplastic Elastomers ◽  
Dynamic Vulcanization

ABSTRACT The application of the low-power CO2 laser-cutting process to fluoroelastomer (FKM), polyamide 6 (PA6), PA6/FKM thermoplastic elastomers (TPEs), and their thermoplastic vulcanizate (TPV) is reported. The main laser process parameters studied were laser power, cutting speed, and material thickness. The value of the top and bottom widths of the slit that were formed during laser cutting (kerf width), melted transverse area, and melted volume per unit time were measured and analyzed. Interestingly, TPE showed a smaller melted area and melted volume per unit time when compared with those values with PA6. Dynamic vulcanization further decreased these values. For example, the melted areas of PA6 and TPE were 510 × 10−3 mm2 and 305 × 10−3 mm2, respectively, which reduced to 238 × 10−3 mm2 for TPV at 40 W laser power. FKM showed the lowest value (melted area of 180 × 10−3 mm2). In addition, the output quality of the cut surface was examined by measuring the root mean square (RMS) roughness of the cut edges and heat-affected zone (HAZ). The obtained results indicated that the dimension of the HAZ and RMS roughness largely decreased in TPE when compared with PA6. For example, the HAZ of PA6 was 700 μm, which decreased to 230 μm for TPE at 40 W laser power. On the other hand, HAZ was nonexistent for FKM. Infrared spectroscopic analysis showed that there was no structural change of TPE or pristine polymers after applying the low-power CO2 laser on the surface of materials. CO2 laser cutting will be a new technique in this industry, and this analysis will assist the manufacturing industry to choose a suitable laser system with exhaustive information of process parameters for cutting or machining of rubber, TPEs, and TPVs.

Bending Deformation of Pure Titanium Plate in CO2 Laser Forming

2007 ◽  
Vol 329 ◽  
pp. 625-630 ◽  
Author(s):  
Koichi Okuda ◽  
Y. Sugie ◽  
Masayuki Nunobiki
Keyword(s):  
Co2 Laser ◽  
Laser Power ◽  
Pure Titanium ◽  
Laser Spot ◽  
Laser Forming ◽  
Titanium Plate ◽  
Bending Angle ◽  
Spot Diameter ◽  
Bending Deformation ◽  
Laser Spot Diameter

This study deals with behaviour of bending deformation in CO2 laser forming process of titanium. CO2 laser forming technique was applied for a pure titanium plate with thickness of 1 mm to aim the development of new bending process. The experiments of laser forming were carried out with a CO2 laser machine. The bending angle and the temperature of workpiece were examined under the condition of various laser power, feed speed and laser spot diameter. Based on the experimental results, it was found that the bending deformation behaved greatly depending on the laser power and the laser spot diameter. The bending angle increased with an increase in the laser power. The bending direction tended to change from the laser irradiation side to its opposite side when the large laser spot diameter was applied.

Low-hole concentration polycrystalline germanium by CO2 laser annealing for the fabrication of an enhancement-mode nMOSFET

2018 ◽  
Vol 11 (10) ◽  
pp. 101305 ◽  
Author(s):  
Hari Anand Kasirajan ◽  
Wen-Hsien Huang ◽  
Ming-Hsuan Kao ◽  
Hsing-Hsiang Wang ◽  
Jia-Min Shieh ◽  
...  
Keyword(s):  
Co2 Laser ◽  
Laser Annealing ◽  
Hole Concentration ◽  
Enhancement Mode

Pulsed excimer and CO2 laser annealing of ion‐implanted silicon

1985 ◽  
Vol 3 (4) ◽  
pp. 1836-1838 ◽  
Author(s):  
J. Narayan ◽  
R. B. James ◽  
O. W. Holland ◽  
M. J. Aziz
Keyword(s):  
Co2 Laser ◽  
Laser Annealing ◽  
Ion Implanted
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