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DTSTART;TZID=Europe/Paris:20260615T110000
DTEND;TZID=Europe/Paris:20260615T120000
DTSTAMP:20260618T132340
CREATED:20260529T122925Z
LAST-MODIFIED:20260529T122925Z
UID:10000168-1781521200-1781524800@sfp-alpes.fr
SUMMARY:Richard HOLZ (School of Mines\, Golden\, Colorado\, USA)
DESCRIPTION:Targeting Iron-Sulfur Cluster Biosynthesis in Staphylococcus aureus : Mechanistic Insights into the SUF Pathway\n_ \nL’accès au CEA Grenoble nécessite un avis de rendez-vous. Merci d’envoyer la copie de votre pièce d’identité à sandrine.ollagnier@cea.fr\, avant le 08 juin 2026.\nPensez à vous munir de cette pièce d’identité le jour de votre visite. \n  \n 
URL:https://sfp-alpes.fr/event/richard-holz-school-of-mines-golden-colorado-usa/
LOCATION:CEA – Salle de séminaire IRIG (104 – bâtiment C3)\, 17\, avenue des Martyrs\, Grenoble\, 38000\, France
CATEGORIES:Séminaire
ORGANIZER;CN="IRIG - CEA":MAILTO:odile.rossignol@cea.fr
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DTSTART;TZID=Europe/Paris:20260615T110000
DTEND;TZID=Europe/Paris:20260615T120000
DTSTAMP:20260618T132340
CREATED:20260611T102519Z
LAST-MODIFIED:20260611T102519Z
UID:10000193-1781521200-1781524800@sfp-alpes.fr
SUMMARY:Luis Alberto RAZO LOPEZ (Institut Langevin\, Paris)
DESCRIPTION:Phase retrieval based on intensity-only spatiotemporal wavefront shaping\nRésumé : \nWe introduce a phase retrieval framework based solely on intensity measurements and intensity-only spatiotemporal modulation. Our approach leverages spatiotemporal wavefront shaping to encode phase information into temporally multiplexed intensity signals\, which are subsequently decomposed in the Fourier domain. We show that the resulting temporal harmonics correspond to spiral-phase–modulated speckle components\, enabling the retrieval of phase information without direct phase-sensitive detection. We derive the harmonic structure induced by a rotating angular aperture mask and demonstrate that each harmonic carries a distinct spiral phase and amplitude weighting governed by a sinc envelope. Based on this structure\, we develop an optimization-based reconstruction algorithm that retrieves both the unknown diffuser phase and system scaling without prior knowledge of the optical transfer function. Experimental results confirm accurate reconstruction of diffuser surfaces and aberration correction\, including refocusing through digital micromirror device (DMD)-induced distortions. \nContact : dorian.bouchet@univ-grenoble-alpes.fr
URL:https://sfp-alpes.fr/event/luis-alberto-razo-lopez-institut-langevin-paris/
LOCATION:LiPhy – Salle de conférence\, LiPhy 140 avenue de la Physique\, St Martin d'Hères\, 38402\, France
CATEGORIES:Séminaire
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