Articles récents
Optics eLearning
I would like to support here a link to Marcel Leutenegger’s webpages on facilities towards optics learning and teaching. Very nice videos introducing the principles of image formation are available (to watch the videos, you’ll need a DivX decoder, see Marcel’s help webpage).
By the way, I would also like to acknowledge Marcel’s nice work on microscopy at Theo Lasser’s group (EPFL,
Training periods and PhD positions in optics & biophotonics
The Mosaic group at the Institut Fresnel offers training periods for graduate students in optics and photonics. PhD positions are also available based on the different internship subjects, depending on the applicant’s profile and fundings. More information can be found on the MOSAIC website.
I would like to give a special emphasis to the subject I propose (in French) :
L'interaction entre la lumière et une structure métallique de taille nanométrique donne accès à des effets impossibles à obtenir avec des systèmes de taille supérieure. Notre équipe s'intéresse à des trous nanométriques percés dans des films métalliques. Ces structures possèdent des propriétés remarquables, notamment leur capacité d'exaltation locale du champ lumineux. De nombreuses propriétés restent encore à défricher, de la compréhension des phénomènes fondamentaux au développement d'applications en nanophotonique et biophotonique.
Le sujet de stage proposé vise à s'intégrer dans le groupe de recherche pour participer aux développements et aux expériences en cours. Une orientation plutôt optique ou plutôt biologie sera possible suivant la sensibilité du candidat, avec toujours une forte composante expérimentale.
Latest (collaboration) article published
Title : Single-scattering theory of light diffraction by a circular subwavelength aperture in a finitely conducting screen
Authors : Evgeny Popov, Michel Nevière, Anne Sentenac, Nicolas Bonod, Anne-Laure Fehrembach, Jérome Wenger, Pierre-François Lenne, and Hervé Rigneault
It has been released in the February edition of the journal of the optical society of JOSA A, vol. 24, pp. 339-358 (2007). Click here to read the abstract and download the paper (subscribers only).
This theoretical paper provides analytical formulas for the electromagnetic field diffracted by a subwavelength aperture in an opaque screen (metallic or dielectric). My contribution to these findings is very small, my name was put on the paper mostly because of the ongoing collaboration between the theoretical and experimental groups at the Fresnel Institute.
Dark Side of the Lab
Some other views of the experimental setup, but in the dark !
Laser powers are about 10mW, camera integration time is 3s.
New article submitted
Aaaarrrrgggghhhhh…. I finally submitted that doomed paper to this high-impact factor physics journal. Took me a too long time to write it down, and to get it into the limited article length :o((
For those interested, here is the abstract :
