Pulsed Nd:YAG laser-induced photoreaction of cis,cis-1,3-cyclooctadiene at 266 nm: selective cyclization to cis-bicyclo[4.2.0]oct-7-ene

2017 ◽  
Vol 16 (2) ◽  
pp. 146-150 ◽  
Author(s):  
Keiko Komori-Orisaku ◽  
Yui Hirose ◽  
Izumi Iwakura
Keyword(s):  
Light Source ◽  
Nd:Yag Laser ◽  
Monochromatic Light ◽  
Pulsed Laser ◽  
Pulsed Nd:Yag Laser ◽  
Photostationary State ◽  
Monochromatic Light Source

A pulsed laser as a highly monochromatic light source controlled the photoreaction selectivity by shifting a photostationary state.

scholarly journals Welding of Aluminum Using a Pulsed Nd:YAG Laser

10.14311/1295 ◽  
2010 ◽  
Vol 50 (6) ◽  
Author(s):  
M. Nerádová ◽  
P. Kovačócy
Keyword(s):  
Laser Welding ◽  
Optical Microscopy ◽  
Nd:Yag Laser ◽  
Pure Aluminum ◽  
Pulsed Laser ◽  
Hardness Measurement ◽  
Pulsed Nd:Yag Laser ◽  
Pulsed Laser Welding

This paper deals with pulsed laser welding of aluminum using an Nd:YAG laser with wavelength 1.06 μm. Technically pure aluminum (95.50 wt. %) was used as the welded material. Eighteen welds (penetration passes) were fabricated in the experiment. Optical microscopy was used to assess the influence of changes in the parameters of the pulsed laser on the quality and geometry of the penetration passes of aluminum and on the hardness measurement through the interface of the welds. The results show that the geometry of the penetration passes was influenced above all by the position of the beam focus.

Phase estimation based on inverse weak-value using a monochromatic light source

2019 ◽  
Vol 13 (1) ◽  
pp. 012001 ◽  
Author(s):  
Shiwei Xie ◽  
Zhaoxue Li ◽  
Yan Liu ◽  
Zhiyou Zhang
Keyword(s):  
Light Source ◽  
Monochromatic Light ◽  
Phase Estimation ◽  
Weak Value ◽  
Monochromatic Light Source

A heat-driven monochromatic light source

1989 ◽  
Vol 17 (2) ◽  
pp. 295-302
Author(s):  
F. Stefani ◽  
J.L. Lawless
Keyword(s):  
Light Source ◽  
Monochromatic Light ◽  
Monochromatic Light Source

Residual Stress and Bead Profile Analysis of Pulsed Nd:YAG Laser Lap Welding

2013 ◽  
Vol 284-287 ◽  
pp. 915-918
Author(s):  
Tsung Pin Hung ◽  
Chao Ming Hsu ◽  
Ah Der Lin ◽  
Jao Hwa Kuang
Keyword(s):  
Heat Transfer ◽  
Residual Stress ◽  
Nd:Yag Laser ◽  
Pulsed Laser ◽  
Welding Process ◽  
Surface Flux ◽  
Pulsed Nd:Yag Laser ◽  
Finite Element Software ◽  
Laser Lap Welding ◽  
Lap Welding

The weld bead temperature distribution and shape during pulsed Nd:YAG laser lap welding are studied. A volumetric heat source model is derived to include the surface flux and the keyhole heat transfer effects in the pulsed laser lap welding process. The proposed pulsed laser heat transfer mode is employed in a simulation with the commercial finite element software Marc. The numerically computed results of the weld pool dimensions are compared with the experimental results. The comparison shows a good agreement between the simulated and measurement results, indicating that the proposed model is feasible. The results reveal that the pulse duration and spot pitch have considerable influence on the temperature field distribution and the residual stress distribution.

In vivo optical interferometric imaging of human skin utilizing monochromatic light source

2016 ◽  
Vol 55 (19) ◽  
pp. 5052
Author(s):  
Kentaro Osawa ◽  
Hiroyuki Minemura ◽  
Yumiko Anzai ◽  
Daisuke Tomita ◽  
Tetsuya Shimanaka ◽  
...  
Keyword(s):  
Light Source ◽  
Human Skin ◽  
Monochromatic Light ◽  
Interferometric Imaging ◽  
Monochromatic Light Source
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