scholarly journals Interpreting light guidance in antiresonant and photonic bandgap waveguides and fibers by light scattering: analytical model and ultra-low guidance

2021 ◽  
Author(s):  
Guangrui Li ◽  
Ron Fatobene Ando ◽  
Matthias Zeisberger ◽  
Thomas Weiss ◽  
Markus Schmidt
Keyword(s):  
Light Scattering ◽  
Analytical Model ◽  
Photonic Bandgap ◽  
Light Guidance

scholarly journals Thermal Modeling in Composite Transmission Laser Welding Process: Light Scattering and Absorption Phenomena Coupling

2014 ◽  
Vol 611-612 ◽  
pp. 1560-1567 ◽  
Author(s):  
André Chateau Akue Asseko ◽  
Benoît Cosson ◽  
Fabrice Schmidt ◽  
Rémi Gilblas ◽  
Yannick Le Maoult ◽  
...  
Keyword(s):  
Light Scattering ◽  
Laser Welding ◽  
Analytical Model ◽  
Three Dimensional ◽  
Welding Process ◽  
Thermoplastic Composites ◽  
Field Calculation ◽  
Laser Beam Intensity ◽  
Welding Interface ◽  
Laser Welding Process

In previous studies [1, , we have presented a detailed formulation of a macroscopic analytical model of the optical propagation of laser beams in the case of unidirectional thermoplastic composites materials. This analytical model presented a first step which concerns the estimation of the laser beam intensity at the welding interface. It describes the laser light path in scattering transparent composites (first component) by introducing light scattering ratio and scattering standard deviation. The absorption was assumed to be negligible in regard to the scattering effect. In this current paper, in order to describe completely the laser welding process in composite materials, we introduce the absorption phenomenon in the model, in the absorbing material (second component), in order to determine the radiative heat source generated at the welding interface. Finally, we will be able to perform a three dimensional temperature field calculation using a commercial FEM software. In laser welding process, the temperature distribution inside the irradiated materials is essential in order to optimize the process. Experimental measurements will be performed in order to valid the analytical model.

scholarly journals Analysis of light scattering from surface roughness in hollow-core photonic bandgap fibers

2012 ◽  
Vol 20 (19) ◽  
pp. 20980 ◽  
Author(s):  
Eric Numkam Fokoua ◽  
Francesco Poletti ◽  
David J. Richardson
Keyword(s):  
Surface Roughness ◽  
Light Scattering ◽  
Photonic Bandgap ◽  
Hollow Core ◽  
Photonic Bandgap Fibers

Collision induced hyper-Rayleigh light scattering in CCl4

1996 ◽  
Vol 88 (3) ◽  
pp. 683-691 ◽  
Author(s):  
P. KAATZ ◽  
D.P. SHELTON
Keyword(s):  
Light Scattering ◽  
Rayleigh Light Scattering ◽  
Rayleigh Light
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