Actualités

Workshop PRAE

Le premier workshop PRAE aura lieu du 8 au 10 octobre 2018 dans les locaux du LAL et de l'IPN, à Orsay.
Le workshop vise à rassembler les experts des domaines couverts par PRAE - techniques accélérateur, instrumentation, physique subatomique et radiothérapie - pour promouvoir PRAE et ouvrir la communauté de users.
L'inscription est ouverte et gratuite. Pour y participer, vous devez vous inscrire sur le site du workshop.

4th International Conference on Physics and Biological Systems (PhysBio 2018)

The 4th International Conference on Physics and Biological Systems (PhysBio 2018) will be held on Oct 22-24 2018 in Gif-sur-Yvette, in the south of Paris. It aims to bring together a broad range of physical and life scientists working at the interface between the two disciplines.
The program mainly comprises in-depth talks from first-rate international speakers accessible to a broad audience. It also includes a few short talks from invited Ph.D. students and a poster session.
Conference website

Atelier de réflexion du GDR MI2B sur le défi 10 ps - 11 et 12 Juin à Paris

Le Pôle imagerie du GDR MI2B de l’IN2P3 organise un atelier de réflexion sur la mise en oeuvre d'un défi portant sur la tomographie par émission de positons à temps-de-vol avec une résolution temporelle de 10 ps. Pour consulter le programme, cliquez ici.

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Publications récentes

Optical properties of mice skull bone in the 455-705 nm range

Soleimanzad H, Gurden H, and Pain F


The activity of cell populations and networks is commonly recorded in vivo in rodents  with wide field optical imaging techniques such as intrinsic optical imaging, fluorescence imaging or laser speckle imaging. These techniques were recently adapted to unrestrained mice carrying transcranial windows. Furthermore, optogenetics studies would benefit from optical stimulation through the skull without implanting an optical fiber, especially for longitudinal studies.

Spectral and fluorescence lifetime endoscopic system using a double-clad photonic crystal fiber

A. Ibrahim, F. Poulon, F. Melouki, M. Zanello, P. Varlet, R. Habert, B. Devaux, A. Kudlinski, and D. Abi Haidar


We present a customized small-core double-clad photonic crystal fiber for spectral and fluorescence lifetime measurements of human samples. In this Letter, the new fiber has been characterized on different fluorophores and samples of human brain tumor; a comparison to a bi-fiber homemade system and a commercial fiber probe was made.

Voir l'article en ligne : ol-41-22-5214

Characterization of fiber ultrashort pulse delivery for nonlinear endomicroscopy

A. Ibrahim, F. Poulon, R. Habert, C. Lefort, A. Kudlinski, and D. Abi Haidar


In this work, we present a detailed characterization of a small-core double-clad photonic crystal fiber, dedicated and approved for in vivo nonlinear imaging endomicroscopy. A numerical and experimental study has been performed to characterize the excitation and collection efficiencies through a 5 m-long optical fiber, including the pulse duration and spectral shape. This was first done without any distal optics, and then the performances of the system were studied by using two kinds of GRIN lenses at the fiber output.

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