Influence of laser beam incidence angle on laser lap welding quality of galvanized steels

2017 ◽  
Vol 402 ◽  
pp. 147-158 ◽  
Author(s):  
Lifang Mei ◽  
Dongbing Yan ◽  
Genyu Chen ◽  
Zhenhui Wang ◽  
Shuixuan Chen
Keyword(s):  
Laser Beam ◽  
Incidence Angle ◽  
Welding Quality ◽  
Galvanized Steels ◽  
Beam Incidence ◽  
Laser Lap Welding ◽  
Lap Welding

Laser lap welding quality of steel/aluminum dissimilar metal joint and its electronic simulations

2016 ◽  
Vol 86 (5-8) ◽  
pp. 2231-2242 ◽  
Author(s):  
Dianwu Zhou ◽  
Shaohua Xu ◽  
Li Peng ◽  
Jinshui Liu
Keyword(s):  
Welding Quality ◽  
Dissimilar Metal ◽  
Metal Joint ◽  
Laser Lap Welding ◽  
Lap Welding

Effect of laser beam incidence angle on cladding morphology in laser cladding process

2020 ◽  
Vol 34 (4) ◽  
pp. 1531-1537
Author(s):  
Guan Zhang ◽  
Wenlei Sun ◽  
Dongmei Zhao ◽  
Pengfei Fan ◽  
Feng Guo ◽  
...  
Keyword(s):  
Laser Beam ◽  
Laser Cladding ◽  
Incidence Angle ◽  
Laser Cladding Process ◽  
Beam Incidence

Matrix-assisted laser desorption/ionization: Dependence of the ion yield on the laser beam incidence angle

1994 ◽  
Vol 8 (5) ◽  
pp. 388-393 ◽  
Author(s):  
Ann Westman ◽  
Thomas Huth-Fehre ◽  
Plamen Demirev ◽  
Jacek Bielawski ◽  
Nelson Medina ◽  
...  
Keyword(s):  
Laser Beam ◽  
Incidence Angle ◽  
Laser Desorption ◽  
Laser Desorption Ionization ◽  
Desorption Ionization ◽  
Beam Incidence ◽  
Matrix Assisted Laser ◽  
Matrix Assisted Laser Desorption

scholarly journals Expanding of Excimer Laser Photoablation’s Functionality in Ophthalmology

2021 ◽  
Vol 12 (3) ◽  
pp. 175-182
Author(s):  
V. A. Alekseev ◽  
V. G. Kostin ◽  
A. V. Usoltseva ◽  
V. P. Usoltsev ◽  
S. I. Yuran
Keyword(s):  
Laser Beam ◽  
Excimer Laser ◽  
Incidence Angle ◽  
A Priori ◽  
Laser Action ◽  
Ablation Zone ◽  
Corneal Surface ◽  
Vision Correction ◽  
Beam Incidence ◽  
Laser Vision

One of the significant weaknesses of excimer laser-based vision correction devices is the difficulty of achieving a required change in the refractive properties of the cornea to sharply focus the image on the retina with distance from the working area (ablation zone) center to the periphery due to a change in the laser beam incidence angle. The study is aimed at improving the quality of laser action on the eye cornea by introducing an optical corrective system into the existing excimer laser vision correction equipment, ensuring the coincidence of the direction of the laser beam incidence on the corneal surface with the normal.It has been shown that the greater the reflection coefficient, the lower the absorbed energy, and the shallower the laser radiation penetration and ablation depths, which reduces the laser action opportunities and quality. When using excimer laser vision correction devices, it has been proposed to change the angle of the laser beam incidence on the cornea with a distance from the working area (ablation zone) center to the periphery during the surgery by introducing an optical corrective system based on a lightweight controllable and movable mirror, which allows achieving the coincidence of the direction of the laser beam incidence on the corneal surface with the normal.The studies have shown that the coincidence of the laser beam incidence on the corneal surface at any point with the normal when using a priori data on the specifics of the patient's eye allows expanding the functional opportunities of excimer laser photoablation, i. e., expand the ablation zone by 30 % and eliminate the possibility of errors caused by the human factor. The technique proposed can be used for excimer laser vision correction according to PRK, LASIK, Femto-LASIK, and other methods. To implement this approach, a patented excimer laser vision correction unit has been proposed with a PCcontrolled optical shaping system comprising galvo motor platforms and galvo mirrors installed on them.

Effect of laser beam incidence angle on the thermoelastic generation in semi-transparent materials

2011 ◽  
Vol 130 (6) ◽  
pp. 3691-3697 ◽  
Author(s):  
Samuel Raetz ◽  
Thomas Dehoux ◽  
Bertrand Audoin
Keyword(s):  
Laser Beam ◽  
Incidence Angle ◽  
Beam Incidence ◽  
Transparent Materials ◽  
Thermoelastic Generation

The Effect of Laser Beam Parameters on Welding Quality of Nitinol Alloys

2021 ◽  
pp. 219-227
Author(s):  
Zazuli Mohid ◽  
Noor Hakim Rafai ◽  
Kamaruddin Kamdani ◽  
Erween Abd Rahim
Keyword(s):  
Laser Beam ◽  
Welding Quality ◽  
Beam Parameters
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