| Téléchargement | - Voir le manuscrit accepté : Octave-spanning hyperspectral coherent diffractive imaging in the extreme ultraviolet range (PDF, 881 Kio)
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| DOI | Trouver le DOI : https://doi.org/10.1364/OE.23.028960 |
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| Auteur | Rechercher : Meng, Yijan1; Rechercher : Zhang, Chunmei1; Rechercher : Marceau, Claude1; Rechercher : Naumov, A. Yu.1; Rechercher : Corkum, P. B.1; Rechercher : Villeneuve, D. M.1 |
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| Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
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| Format | Texte, Article |
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| Résumé | Soft x-ray microscopy is a powerful imaging technique that provides sub-micron spatial resolution, as well as chemical specificity using core-level near-edge x-ray absorption fine structure (NEXAFS). Near the carbon K-edge (280–300 eV) biological samples exhibit high contrast, and the detailed spectrum contains information about the local chemical environment of the atoms. Most soft x-ray imaging takes place on dedicated beamlines at synchrotron facilities or at x-ray free electron laser facilities. Tabletop femtosecond laser systems are now able to produce coherent radiation at the carbon K-edge and beyond through the process of high harmonic generation (HHG). The broad bandwidth of HHG is seemingly a limitation to imaging, since x-ray optical elements such as Fresnel zone plates require monochromatic sources. Counter-intuitively, the broad bandwidth of HHG sources can be beneficial as it permits chemically-specific hyperspectral imaging. We apply two separate techniques – Fourier transform spectroscopy, and lensless holographic imaging – to obtain images of an object simultaneously at multiple wavelengths using an octave-spanning high harmonic source with photon energies up to 30 eV. We use an interferometric delay reference to correct for nanometer-scale fluctuations between the two HHG sources. |
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| Date de publication | 2015-10-28 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21277167 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 7ec3c043-41e2-4e8b-8ec7-c444dff6cbbd |
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| Enregistrement créé | 2015-12-23 |
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| Enregistrement modifié | 2020-06-04 |
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