J
Jörg Hermann
Researcher at Aix-Marseille University
Publications - 117
Citations - 3516
Jörg Hermann is an academic researcher from Aix-Marseille University. The author has contributed to research in topics: Laser & Laser ablation. The author has an hindex of 33, co-authored 115 publications receiving 3201 citations. Previous affiliations of Jörg Hermann include University of the Mediterranean & Centre national de la recherche scientifique.
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Laser-generated plasma plume expansion: combined continuous-microscopic modeling.
TL;DR: A three-dimensional combined model is developed to describe the plasma plume formation and its expansion in vacuum or into a background gas and it is shown that the calculations suggest localized formation of molecules during reactive laser ablation.
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Investigation of nanoparticle generation during femtosecond laser ablation of metals
TL;DR: In this paper, the authors investigated the production of nanoparticles via femtosecond laser ablation of gold and copper using measurements of the ablated mass, plasma diagnostics, and analysis of the nanoparticle size distribution.
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Diagnostics of the early phase of an ultraviolet laser induced plasma by spectral line analysis considering self-absorption
TL;DR: In this paper, the authors performed time and space resolved plasma diagnostics during ultraviolet excimer laser ablation of a Ti target in a low pressure N2 atmosphere, and compared the line profiles computed for a plasma in a local thermodynamic equilibrium.
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A study of molecule formation during laser ablation of graphite in low-pressure nitrogen
TL;DR: In this article, optical emission spectra (OES) of plasma species have been recorded for different distances from the target and for various ammonia pressures, indicating that a collisional equilibrium was reached among the heavy particles of the plasma plume.
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Comparative investigation of solar cell thin film processing using nanosecond and femtosecond lasers
Jörg Hermann,Moez Benfarah,S. Bruneau,Emanuel Axente,G. Coustillier,Tatiana Itina,Jean-François Guillemoles,P. Alloncle +7 more
TL;DR: In this article, the authors examined the possibility of laser-machining of CuInSe2-based photovoltaic devices and found that residues of Mo that were projected onto the walls of the ablation channel and the metallization of the CuSe2 semiconductor close to the channel led to a shunt in the device that decreases the photovelectric efficiency.