Commissariat a L'energie Atomique Et Aux Energies Alternatives

Centre National De La Recherche Scientifique

Universite Claude Bernard – Lyon1

Institut National Des Sciences Appliquees De Lyon

Ecole Centrale De Lyon

Cpe Lyon Formation Continue Et Recherche

Avalun

Jean-Marc Fedeli

Patrick Pouteau

Pierre Labeye

Maryse Fournier

Mathieu Dupoy

Vincent Reboud

Cécile Jamois

Nicolas Gaignebet

Taha Benyattou

Lotfi Berguiga

A laser includes a distributed Bragg mirror and is configured to emit monochromatic light radiation along a longitudinal direction. The laser has layers, stacked along a first transverse direction normal to the longitudinal direction and made of III-V materials, including an active region configured to emit the radiation. The mirror is formed by periodic lateral corrugations which extend mainly along the longitudinal direction and having a dimension along a second transverse direction normal to the longitudinal direction. The lateral corrugations of the Bragg mirror extend from a top surface of the waveguide pattern along the first transverse direction on a height strictly less than the depth, at which the active region is located starting from the top surface, such that a portion of lateral flanks of the waveguide is free of any lateral corrugations at the active region.

Laser comprising a distributed Bragg mirror and production method thereof

A method for analysing a sample uses a resonant support having a surface on which a plurality of separated photonic crystals extends. At least two crystals are configured to capture the same analyte. A resonance wavelength associated with each crystal varies with an amount of analyte in contact with the crystal. The wavelengths define a resonance spectral band between 200-1500 nm. The transmission/reflection of the light is maximum at an associated resonance wavelength. The method includes: illuminating the support in the resonance spectral band, the intensity of the lamination being variable in band; acquiring a measurement image using an image sensor, the image having different regions-of-interest each optically coupled to a photonic crystal; using a reference image representative of an image acquired by the image sensor, when the support is illuminated in the resonance spectral band in a reference configuration; and comparing the measurement image with the reference image.

Method and device for analysing a sample, implementing a resonant support

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Grenoble, France

Jean-Marc Fedeli