Docteur Patrick FERRAND

Bibliographie

• Vectorial ptychography: when polarization comes into play

  2024

  Congrès11th international confererence on phase retrieval and coherent scattering (Coherence 2024)

• Extending the capabilities of vectorial ptychography to circular-polarizing materials such as cholesteric liquid crystals

  2023

  ArticleOptics Letters

• Vectorial ptychography: Imaging when polarization matters

  2023

  CongrèsCoWork Webinar Series

• Sub-micrometric spatial distribution of amorphous and crystalline carbonates in biogenic crystals using coherent Raman microscopy

  2022

  ArticleJournal of Structural Biology

• Bio-inspired films of crystalline calcium carbonate: 2D patterning by surface-driven liquid-liquid phase separation and hybrid amorphous-to-crystal transformation

  2022

  Congrès33rd European Crystallography Meeting (ECM33)

• Amorphous-to-crystal transition in the layer-by-layer growth of bivalve shell prisms

  2022

  ArticleActa Biomaterialia

• Phase imaging by computational microscopy: the power of vectorial ptychography

  2022

  CongrèsEurophotonics Springschool 2022

• Broadband decoupling of intensity and polarization with vectorial Fourier metasurfaces

  2021

  ArticleNature Communications

Source : HAL — archive ouverte CCSD/CNRS (couvre articles, chapitres EMC, communications congrès, thèses).

Lieu de consultation

Tarifs & secteur de conventionnement

Secteur de conventionnement non disponible (médecin hospitalier ou non présent dans l'Annuaire santé CNAM des libéraux conventionnés).

Prendre rendez-vous & contact

Lien Doctolib = recherche Google site:doctolib.fr (le 1er résultat est presque toujours le profil correct s'il existe).

Articles de presse (1)

Source : Google News (recherche par nom complet — homonymes possibles, vérifier le contenu).

• Les pompiers fêtaient la Sainte-Barbe - L’Éveil de la Haute-Loire

  📰 L’Éveil de la Haute-Loire · 08/12/2017

  <a href="https://news.google.com/rss/articles/CBMimgFBVV95cUxQblNOc05LcjdYVl9LT25vazM3eWxwSGx3WkhXUjR6QjhkQ21uZElNU0IzTUhvZm1VZWxBREtuWnhsaWE3alRLbVIxS2IyTXJFSmY4c2xkdDY3cktqT1drdUNnT0dhalduSGFTbkFBZ2JBTWNPelFqOEd6UXZTYzBFcVRRTEtESGlQRlZWSU91SDlPUHBoUUZlYldB?oc=5" target="_blank">Les pompiers fêtaie

Top publications · les plus citées

• 1

  Ptychography retrieval of fully polarized holograms from geometric-phase metasurfaces

  Nature communications · 2020

  📚 97 citations🎯 RCR 5.48Top 7% NIH🔓 Open Access📄 PDF gratuit ↗

  Lire l'abstract Crossref ↓

  AbstractControlling light properties with diffractive planar elements requires full-polarization channels and accurate reconstruction of optical signal for real applications. Here, we present a general method that enables wavefront shaping with arbitrary output polarization by encoding both phase and polarization information into pixelated metasurfaces. We apply this concept to convert an input plane wave with linear polarization to a holographic image with arbitrary spatial output polarization. A vectorial ptychography technique is introduced for mapping the Jones matrix to monitor the reconstructed metasurface output field and to compute the full polarization properties of the vectorial far field patterns, confirming that pixelated interfaces can deflect vectorial images to desired directions for accurate targeting and wavefront shaping. Multiplexing pixelated deflectors that address different polarizations have been integrated into a shared aperture to display several arbitrary polarized images, leading to promising new applications in vector beam generation, full color display and augmented/virtual reality imaging.

• 2

  Direct imaging of photonic nanojets

  Optics express · 2008

  📚 94 citations🎯 RCR 2.90Top 17% NIH🔓 Open Access
• 3

  Broadband decoupling of intensity and polarization with vectorial Fourier metasurfaces

  Nature communications · 2021

  📚 47 citations🎯 RCR 3.26Top 14% NIH🔓 Open Access📄 PDF gratuit ↗

  Lire l'abstract Crossref ↓

  Abstract Intensity and polarization are two fundamental components of light. Independent control of them is of tremendous interest in many applications. In this paper, we propose a general vectorial encryption method, which enables arbitrary far-field light distribution with the local polarization, including orientations and ellipticities, decoupling intensity from polarization across a broad bandwidth using geometric phase metasurfaces. By revamping the well-known iterative Fourier transform algorithm, we propose “à la carte” design of far-field intensity and polarization distribution with vectorial Fourier metasurfaces. A series of non-conventional vectorial field distribution, mimicking cylindrical vector beams in the sense that they share the same intensity profile but with different polarization distribution and a speckled phase distribution, is demonstrated. Vectorial Fourier optical metasurfaces may enable important applications in the area of complex light beam generation, secure optical data storage, steganography and optical communications.

Publications scientifiques (25) — classées par pathologie

Source PubMed · Recherche par auteur (homonymes possibles, vérifier l'affiliation).

Datasets & protocoles partagés

• Direct imaging of photonic nanojets

  Collection2008Figshare

  We report the direct experimental observation of photonic nanojets created by single latex microspheres illuminated by a plane wave at a wavelength of 520 nm. Measurements are performed with a fast scanning confocal micr

• GPScan.VI: A general-purpose LabVIEW program for scanning imaging or any application requiring synchronous analog voltage generation and data acquisition

  Dataset2019Mendeley

  Abstract A large number of measurement techniques involve the scanning of a probe, while a physical quantity is measured. This is for instance the case for all scanning imaging methods. Data acquisition therefore require

• Extending the capabilities of vectorial ptychography to circular-polarizing materials such as cholesteric liquid crystals

  Collection2023Optica Publishing Group

  The problem of imaging materials with circular polarization properties is discussed within the framework of vectorial ptychography. We demonstrate, both theoretically and numerically, that using linear polarizations to i

• GPScan.VI: A general-purpose LabVIEW program for scanning imaging or any application requiring synchronous analog voltage generation and data acquisition

  Dataset2019Mendeley

  Abstract A large number of measurement techniques involve the scanning of a probe, while a physical quantity is measured. This is for instance the case for all scanning imaging methods. Data acquisition therefore require

• Reference-free quantitative microscopic imaging of coherent arbitrary vectorial light beams

  Collection2020The Optical Society

  Precise spatial characterization of vectorial beams is crucial for many advanced optical experiments, but challenging when wavefront and polarization features are involved together. Here we propose a reference-free metho

• Direct imaging of photonic nanojets

  Collection2008Figshare

  We report the direct experimental observation of photonic nanojets created by single latex microspheres illuminated by a plane wave at a wavelength of 520 nm. Measurements are performed with a fast scanning confocal micr

Source : DataCite — DOIs pour datasets, logiciels, protocoles, registres patient. Hors articles (déjà couverts).

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