R
R. Giust
Researcher at Centre national de la recherche scientifique
Publications - 48
Citations - 924
R. Giust is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Ultrashort pulse & Laser. The author has an hindex of 16, co-authored 42 publications receiving 791 citations. Previous affiliations of R. Giust include University of Franche-Comté & University of Burgundy.
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Journal ArticleDOI
Arbitrary accelerating micron-scale caustic beams in two and three dimensions
Luc Froehly,François Courvoisier,Amaury Mathis,Maxime Jacquot,Luca Furfaro,R. Giust,Pierre-Ambroise Lacourt,John M. Dudley +7 more
TL;DR: By applying additional and rotational spatial phase, caustic-bounded sheet and volume beams are generated, which both show evidence of the recently predicted effect of abrupt autofocussing and proof of principle demonstration of how this technique may yield new degrees of freedom in both nonlinear optics and femtosecond micromachining.
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Sending femtosecond pulses in circles: highly nonparaxial accelerating beams
François Courvoisier,Amaury Mathis,Luc Froehly,R. Giust,Luca Furfaro,Pierre-Ambroise Lacourt,Maxime Jacquot,John M. Dudley +7 more
TL;DR: Using diffraction integral theory and numerical beam propagation simulations, it is shown that circular acceleration trajectories represent a unique class of nonparaxial diffraction-free beam profile which also preserves the femtosecond temporal structure in the vicinity of the caustic.
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Single-shot ultrafast laser processing of high-aspect-ratio nanochannels using elliptical Bessel beams.
Remi Meyer,Maxime Jacquot,R. Giust,Jassem Safioui,Ludovic Rapp,Luca Furfaro,Pierre Lacourt,John M. Dudley,François Courvoisier +8 more
TL;DR: In this article, a non-diffracting beam engineered to have a transverse elliptical spatial profile was used to generate high-aspect-ratio elliptical channels in glass of a dimension 350 nm×710 nm and subsequent cleaved surface uniformity at sub-micron level.
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Tubular filamentation for laser material processing
Chen Xie,Vytautas Jukna,Vytautas Jukna,C. Milián,R. Giust,Ismail Ouadghiri-Idrissi,Tatiana Itina,John M. Dudley,Arnaud Couairon,François Courvoisier +9 more
TL;DR: It is demonstrated how the generation of plasma in this tubular geometry can lead to applications in ultrafast laser material processing in terms of single shot index writing, and discussed how it opens important perspectives for material compression and filamentation guiding in atmosphere.
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Light transport in tissue by 3D Monte Carlo: Influence of boundary voxelization
TL;DR: It is concluded that if one wants to perform reliable 3D Monte Carlo simulations on complex geometries, such as human brain, skin or trabecular bone, it is necessary to introduce boundary meshing techniques or other equivalent procedures in the MC code to eliminate the deleterious effect of voxelization.