Publications associées à Front d'onde

Direct Observation of Worm‐Like Nanochannels and Emergent Magnon Motifs in Artificial Ferromagnetic Quasicrystals

Dirk Grundler, Sho Watanabe, Vinayak Shantaram Bhat

Quasicrystalline structures and aperiodic metamaterials find applications ranging from established consumer gadgets to potential high‐tech photonic components owing to both complex arrangements of constituents and exotic rotational symmetries. Magnonics is ...

2020

Beam duct for the 1 MW neutral beam injector on TCV

Basil Duval, Stefano Coda, Yves Martin, Alexander Karpushov, Matthieu Toussaint, Frédéric Dolizy, Roberto Maurizio

The 1MW power of the neutral beam injector (NBI) enters the plasma of the Tokamak a Configuration Variable (TCV) through a duct. The original beam propagation model predicted a maximal heat flux on the internal faces of the duct below 350 kW/m(2), leading ...

2020

Selective femtosecond laser ablation via two-photon fluorescence imaging through a multimode fiber

Demetri Psaltis, Christophe Moser, Damien Claude-Marie Loterie, Eirini Kakkava, Donald Benjaman Conkey, Marilisa Romito

We demonstrate the ability of a multimode fiber probe to provide two-photon fluorescence (TPF) imaging feedback that guides the femtosecond laser ablation (FLA) in biological samples for highly selective modifications. We implement the system through the p ...

OPTICAL SOC AMER2019

Specification of aspherical surfaces used as refractive elements in micro-optical systems

Toralf Scharf, Wilfried Noell, Jeremy Béguelin

The optical performance of refractive plano-convex microlenses is mainly related to the quality of their (a)spherical surface. An efficient tolerancing of this surface is a key step towards the manufacturing of high quality microlenses. However, we demonst ...

SPIE-INT SOC OPTICAL ENGINEERING2019

Ultrasensitive hyperspectral imaging and biodetection enabled by dielectric metasurfaces

Volkan Cevher, Hatice Altug, Filiz Yesilköy, Andreas Tittl, Yasaman Jahani, Eduardo Romero Arvelo, Mingkai Liu

Metasurfaces based on resonant subwavelength photonic structures enable novel ways of wavefront control and light focusing, underpinning a new generation of flat-optics devices. Recently emerged all-dielectric asymmetric metasurfaces, composed of arrays of ...

2019

Dot pattern generation using thick sinusoidal phase grating under Gaussian beam illumination

Toralf Scharf, Maryam Yousefi

Far-field dot pattern generation is analyzed for a Gaussian beam source that illuminates a sinusoidal phase grating which is placed at a certain distance behind the beam waist. We obtain a bigger field of view with more numbers of points using a Gaussian b ...

SPIE-INT SOC OPTICAL ENGINEERING2019

1D moiré shapes by superposed layers of micro-lenses

Jürgen Brugger, Roger Hersch, Thomas Walger, Valentin Flauraud, Théophane Besson

Two superposed layers of transparent cylindrical lenslet gratings create classical moiré fringes, when illuminated from behind. We rely on this observation to conceive special devices made of superposed lenslet gratings that produce animated moirés when th ...

2019

Imaging-based molecular barcoding with pixelated dielectric metasurfaces

Hatice Altug, Filiz Yesilköy, Andreas Tittl, Aleksandrs Leitis, Mingkai Liu

Metasurfaces provide opportunities for wavefront control, flat optics, and subwavelength light focusing. We developed an imaging-based nanophotonic method for detecting mid-infrared molecular fingerprints and implemented it for the chemical identification ...

2018

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Front d'onde

Wavefront shaping and deep learning in fiber endoscopy

Direct Observation of Worm‐Like Nanochannels and Emergent Magnon Motifs in Artificial Ferromagnetic Quasicrystals

Beam duct for the 1 MW neutral beam injector on TCV

Selective femtosecond laser ablation via two-photon fluorescence imaging through a multimode fiber

Specification of aspherical surfaces used as refractive elements in micro-optical systems

Ultrasensitive hyperspectral imaging and biodetection enabled by dielectric metasurfaces

Dot pattern generation using thick sinusoidal phase grating under Gaussian beam illumination

1D moiré shapes by superposed layers of micro-lenses

Aberrations analysis of a Focused Plenoptic Camera

Imaging-based molecular barcoding with pixelated dielectric metasurfaces

Graph Chatbot

Chattez avec Graph Search

Direct Observation of Worm‐Like Nanochannels and Emergent Magnon Motifs in Artificial Ferromagnetic Quasicrystals

Wavefront shaping and deep learning in fiber endoscopy

Selective femtosecond laser ablation via two-photon fluorescence imaging through a multimode fiber

Beam duct for the 1 MW neutral beam injector on TCV

Specification of aspherical surfaces used as refractive elements in micro-optical systems

Dot pattern generation using thick sinusoidal phase grating under Gaussian beam illumination

Ultrasensitive hyperspectral imaging and biodetection enabled by dielectric metasurfaces

1D moiré shapes by superposed layers of micro-lenses

Imaging-based molecular barcoding with pixelated dielectric metasurfaces

Aberrations analysis of a Focused Plenoptic Camera