Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Université Joseph Fourier

Université De Technologie De Troyes

Université Grenoble Alpes

Université Pierre Et Marie Curie

Centre National De La Recherche Scientifique-cnrs

Institut National Polytechnique De Grenoble

Gilles Lerondel

Sylvain Blaize

Pierre Benech

Cédric Boissiere

Marianne Consonni

Pascal Royer

Jérôme Hazart

Aurelien Bruyant

Etienne Le Coarer

Gwenole Corre

Yassine Hadjar

Pierre Kern

Alain Morand

Vesna Simic

Romuald Woo

Mathieu Trocme

Loïc Le Cunff

Komla Nomenyo

Rafäel Salas Montiel

Joyce Ibrahim

Anna Rumyantseva

Timothée Toury

David Grosso

Yoann Moline

A spectrometer for sampling interferograms in two dimensions offering a large spectral band and high spectral resolution with a relative compactness. The spectrometer includes a refracting surface, an array of detecting elements and an array of diffusion elements capturing means at the refracting surface of an interferogram delivered from two interference beams (F, F) and forming interference lines parallel to each other along the transverse axis (Ox) of the interferogram within the plane (xOy) of the refracting surface, the array of detection elements being parallel to the plane of the refracting surface and arranged to detect the spatial distribution of the interferogram, wherein the array is a two-dimensional array over an entirety of which the detections elements are disposed equidistantly, and wherein interference lines exhibit an angular shift with the capturing means.

Compact spectrometer for two-dimensional sampling

The general field of the invention is that of devices for focusing light to subwavelength dimensions including at least one focusing structure having a metal film provided with a first aperture that penetrates the film, the aperture having dimensions an order of magnitude smaller than the working wavelength of the focusing device. In the devices according to the invention, the focusing structure has at least one optical cavity placed around the aperture so that, when the structure is illuminated with a radiant flux at the working wavelength of the device, a large part of this flux is concentrated on the aperture by said cavity. Several embodiments are described using various cavities that may comprise plasmon reflectors.

High-efficiency device for focusing light to subwavelength dimensions

The invention relates to a spectrograph () comprising a waveguide () provided with accesses (), a means for injecting two guided contra-propagative waves by each accesses in such a way that a spatial interference is formed in the waveguide, means () for detecting the energy of the evanescent wave of the guided field produced by the interference of said contra-propagative waves.

Contra-propagative wave spectograph

Growing community of inventors

Saint Julien les Villas, France

Gilles Lerondel