Nonlinear iterative perturbation scheme with simplified spherical harmonics ( SP 3 ) light propagation model for quantitative photoacoustic tomography

2021 ◽  
Author(s):  
Yihan Wang ◽  
Menglu Xu ◽  
Feng Gao ◽  
Fei Kang ◽  
Shouping Zhu
Keyword(s):  
Spherical Harmonics ◽  
Light Propagation ◽  
Propagation Model ◽  
Photoacoustic Tomography ◽  
Perturbation Scheme

FDTD Simulation of Light Propagation Inside a-Si:H Structures

2010 ◽  
Vol 1245 ◽  
Author(s):  
Alessandro Fantoni ◽  
Pedro Pinho
Keyword(s):  
Light Absorption ◽  
Electromagnetic Waves ◽  
Light Propagation ◽  
Light Transmission ◽  
Visible Spectrum ◽  
Propagation Model ◽  
Interface Roughness ◽  
Fdtd Simulation ◽  
Doping Density ◽  
Surface And Interface

AbstractWe have developed a computer program based on the Finite Difference Time Domain (FDTD) algorithm able to simulate the propagation of electromagnetic waves with wavelengths in the range of the visible spectrum within a-Si:H p-i-n structures. Understanding of light transmission, reflection and propagation inside semiconductor structures is crucial for development of photovoltaic devices. Permitting 1D analysis of light propagation over time evolution, our software produces results in well agreement with experimental values of the absorption coefficient. It shows the light absorption process together with light reflection effects at the incident surface as well as at the semiconductor interfaces. While the effects of surface reflections are easily taken into account by the algorithm, light absorption represents a more critical point, because of its non-linear dependence from conductivity. Doping density, density of states and photoconductivity calculation are therefore crucial parameters for a correct description of the light absorption-transmission phenomena through a light propagation model.The results presented in this paper demonstrate that is possible to describe the effect of the light-semiconductor interaction through the application of the FDTD model to a a-Si:H solar cell. A more general application of the model to 2D geometries will permit the analysis of the influence of surface and interface roughness on the device photovoltaic efficiency.

scholarly journals Analysis of the Light Propagation Model of the Optical Voltage Sensor for Suppressing Unreciprocal Errors

Sensors ◽  
2017 ◽  
Vol 17 (1) ◽  
pp. 85 ◽  
Author(s):  
Hui Li ◽  
Zhida Fu ◽  
Liying Liu ◽  
Zhili Lin ◽  
Wei Deng ◽  
...  
Keyword(s):  
Light Propagation ◽  
Voltage Sensor ◽  
Propagation Model

scholarly journals A light-propagation model for aircraft trajectory planning

2012 ◽  
Vol 56 (3) ◽  
pp. 873-895 ◽  
Author(s):  
Nourelhouda Dougui ◽  
Daniel Delahaye ◽  
Stéphane Puechmorel ◽  
Marcel Mongeau
Keyword(s):  
Trajectory Planning ◽  
Light Propagation ◽  
Propagation Model ◽  
Aircraft Trajectory

Hybrid simplified spherical harmonics with diffusion equation for light propagation in tissues

2015 ◽  
Vol 60 (16) ◽  
pp. 6305-6322 ◽  
Author(s):  
Xueli Chen ◽  
Fangfang Sun ◽  
Defu Yang ◽  
Shenghan Ren ◽  
Qian Zhang ◽  
...  
Keyword(s):  
Diffusion Equation ◽  
Spherical Harmonics ◽  
Light Propagation ◽  
Light Propagation In Tissues
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